18044727156 has 48 divisors (see below), whose sum is σ = 46814503680. Its totient is φ = 6010810560.

The previous prime is 18044727143. The next prime is 18044727161. The reversal of 18044727156 is 65172744081.

18044727156 is a `hidden beast` number, since 180 + 447 + 27 + 1 + 5 + 6 = 666.

It is a super-2 number, since 2×18044727156² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 104416 + ... + 216776.

It is an arithmetic number, because the mean of its divisors is an integer number (975302160).

Almost surely, 2^18044727156 is an apocalyptic number.

It is an amenable number.

18044727156 is an abundant number, since it is smaller than the sum of its proper divisors (28769776524).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18044727156 is a wasteful number, since it uses less digits than its factorization.

18044727156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113861 (or 113853 counting only the distinct ones).

The product of its (nonzero) digits is 376320, while the sum is 45.

The spelling of 18044727156 in words is "eighteen billion, forty-four million, seven hundred twenty-seven thousand, one hundred fifty-six".