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8053868181 = 319375372053
BaseRepresentation
bin1111000000000110…
…00100011010010101
3202210021202220011010
413200003010122111
5112443242240211
63411102202433
7403403515152
oct74003043225
922707686133
108053868181
113463220407
121689283419
139b4754098
145658cb229
153220db4a6
hex1e00c4695

8053868181 has 32 divisors (see below), whose sum is σ = 11828384640. Its totient is φ = 4855728384.

The previous prime is 8053868171. The next prime is 8053868227. The reversal of 8053868181 is 1818683508.

It is not a de Polignac number, because 8053868181 - 25 = 8053868149 is a prime.

It is a super-2 number, since 2×80538681812 (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 8053868181.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8053868171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 75751 + ... + 147803.

It is an arithmetic number, because the mean of its divisors is an integer number (369637020).

Almost surely, 28053868181 is an apocalyptic number.

It is an amenable number.

8053868181 is a deficient number, since it is larger than the sum of its proper divisors (3774516459).

8053868181 is a wasteful number, since it uses less digits than its factorization.

8053868181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72165.

The product of its (nonzero) digits is 368640, while the sum is 48.

The square root of 8053868181 is about 89743.3461656072. The cubic root of 8053868181 is about 2004.4789769781.

The spelling of 8053868181 in words is "eight billion, fifty-three million, eight hundred sixty-eight thousand, one hundred eighty-one".

Divisors: 1 3 19 37 53 57 111 159 703 1007 1961 2109 3021 5883 37259 72053 111777 216159 1369007 2665961 3818809 4107021 7997883 11456427 50653259 72557371 141295933 151959777 217672113 423887799 2684622727 8053868181