18892042557904 has 160 divisors (see below), whose sum is σ = 39505366137600. Its totient is φ = 8733875404800.

The previous prime is 18892042557889. The next prime is 18892042557911. The reversal of 18892042557904 is 40975524029881.

It is a super-2 number, since 2×18892042557904² (a number of 27 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 31 ways as a sum of consecutive naturals, for example, 1692981477 + ... + 1692992635.

It is an arithmetic number, because the mean of its divisors is an integer number (246908538360).

Almost surely, 2^{18892042557904} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18892042557904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19752683068800).

18892042557904 is an abundant number, since it is smaller than the sum of its proper divisors (20613323579696).

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

18892042557904 is a wasteful number, since it uses less digits than its factorization.

18892042557904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12893 (or 12887 counting only the distinct ones).

The product of its (nonzero) digits is 58060800, while the sum is 64.

The spelling of 18892042557904 in words is "eighteen trillion, eight hundred ninety-two billion, forty-two million, five hundred fifty-seven thousand, nine hundred four".