Search a number
-
+
18030838895 = 510163354833
BaseRepresentation
bin10000110010101110…
…001100010001101111
31201112121012112000222
4100302232030101233
5243411343321040
612141103241555
71205551413266
oct206256142157
951477175028
1018030838895
117712a36153
1235b25a92bb
13191473a354
14c309775dd
15707e4abb5
hex432b8c46f

18030838895 has 8 divisors (see below), whose sum is σ = 21639196656. Its totient is φ = 14423211136.

The previous prime is 18030838849. The next prime is 18030838907. The reversal of 18030838895 is 59883803081.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18030838895 - 210 = 18030837871 is a prime.

It is a super-2 number, since 2×180308388952 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 126602 + ... + 228231.

It is an arithmetic number, because the mean of its divisors is an integer number (2704899582).

Almost surely, 218030838895 is an apocalyptic number.

18030838895 is a deficient number, since it is larger than the sum of its proper divisors (3608357761).

18030838895 is a wasteful number, since it uses less digits than its factorization.

18030838895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 365001.

The product of its (nonzero) digits is 1658880, while the sum is 53.

The spelling of 18030838895 in words is "eighteen billion, thirty million, eight hundred thirty-eight thousand, eight hundred ninety-five".

Divisors: 1 5 10163 50815 354833 1774165 3606167779 18030838895