18492072291408 has 20 divisors (see below), whose sum is σ = 47771186752928. Its totient is φ = 6164024097120.

The previous prime is 18492072291391. The next prime is 18492072291421. The reversal of 18492072291408 is 80419227029481.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 192625752988 + ... + 192625753083.

Almost surely, 2^{18492072291408} is an apocalyptic number.

It is an amenable number.

18492072291408 is an abundant number, since it is smaller than the sum of its proper divisors (29279114461520).

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

18492072291408 is a wasteful number, since it uses less digits than its factorization.

18492072291408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385251506082 (or 385251506076 counting only the distinct ones).

The product of its (nonzero) digits is 4644864, while the sum is 57.

The spelling of 18492072291408 in words is "eighteen trillion, four hundred ninety-two billion, seventy-two million, two hundred ninety-one thousand, four hundred eight".