18159425412 has 12 divisors (see below), whose sum is σ = 42371992656. Its totient is φ = 6053141800.

The previous prime is 18159425399. The next prime is 18159425413. The reversal of 18159425412 is 21452495181.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (18159425413) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 756642714 + ... + 756642737.

It is an arithmetic number, because the mean of its divisors is an integer number (3530999388).

Almost surely, 2^18159425412 is an apocalyptic number.

18159425412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18159425412 is an abundant number, since it is smaller than the sum of its proper divisors (24212567244).

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

18159425412 is a wasteful number, since it uses less digits than its factorization.

18159425412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1513285458 (or 1513285456 counting only the distinct ones).

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

The spelling of 18159425412 in words is "eighteen billion, one hundred fifty-nine million, four hundred twenty-five thousand, four hundred twelve".