18539091089862 has 32 divisors (see below), whose sum is σ = 42376738263552. Its totient is φ = 5296674054144.

The previous prime is 18539091089807. The next prime is 18539091089863. The reversal of 18539091089862 is 26898019093581.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18539091089863) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7635003 + ... + 9765830.

It is an arithmetic number, because the mean of its divisors is an integer number (1324273070736).

Almost surely, 2^{18539091089862} is an apocalyptic number.

18539091089862 is an abundant number, since it is smaller than the sum of its proper divisors (23837647173690).

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

18539091089862 is a wasteful number, since it uses less digits than its factorization.

18539091089862 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17426212.

The product of its (nonzero) digits is 67184640, while the sum is 69.

The spelling of 18539091089862 in words is "eighteen trillion, five hundred thirty-nine billion, ninety-one million, eighty-nine thousand, eight hundred sixty-two".