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851138413 = 1018427113
BaseRepresentation
bin110010101110110…
…101011101101101
32012022120022101221
4302232311131231
53220342412123
6220242503341
730043362046
oct6256653555
92168508357
10851138413
113a7499984
121b9064b51
131074494c8
148107b8cd
154eac925d
hex32bb576d

851138413 has 4 divisors (see below), whose sum is σ = 859565628. Its totient is φ = 842711200.

The previous prime is 851138399. The next prime is 851138419. The reversal of 851138413 is 314831158.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 568965609 + 282172804 = 23853^2 + 16798^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-851138413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (851138419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4213456 + ... + 4213657.

It is an arithmetic number, because the mean of its divisors is an integer number (214891407).

Almost surely, 2851138413 is an apocalyptic number.

It is an amenable number.

851138413 is a deficient number, since it is larger than the sum of its proper divisors (8427215).

851138413 is a wasteful number, since it uses less digits than its factorization.

851138413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8427214.

The product of its digits is 11520, while the sum is 34.

The square root of 851138413 is about 29174.2765634386. The cubic root of 851138413 is about 947.6909436190.

The spelling of 851138413 in words is "eight hundred fifty-one million, one hundred thirty-eight thousand, four hundred thirteen".

Divisors: 1 101 8427113 851138413