18154815036 has 24 divisors (see below), whose sum is σ = 42381080784. Its totient is φ = 6048769920.

The previous prime is 18154815031. The next prime is 18154815037. The reversal of 18154815036 is 63051845181.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18154815031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 327625 + ... + 379008.

It is an arithmetic number, because the mean of its divisors is an integer number (1765878366).

Almost surely, 2^18154815036 is an apocalyptic number.

It is an amenable number.

18154815036 is an abundant number, since it is smaller than the sum of its proper divisors (24226265748).

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

18154815036 is a wasteful number, since it uses less digits than its factorization.

18154815036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 708781 (or 708779 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 42.

The spelling of 18154815036 in words is "eighteen billion, one hundred fifty-four million, eight hundred fifteen thousand, thirty-six".