18072357982 has 16 divisors (see below), whose sum is σ = 32049502560. Its totient is φ = 7478216928.

The previous prime is 18072357967. The next prime is 18072358001. The reversal of 18072357982 is 28975327081.

It is a super-2 number, since 2×18072357982² (a number of 21 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 7 ways as a sum of consecutive naturals, for example, 22256193 + ... + 22257004.

It is an arithmetic number, because the mean of its divisors is an integer number (2003093910).

Almost surely, 2^18072357982 is an apocalyptic number.

18072357982 is a deficient number, since it is larger than the sum of its proper divisors (13977144578).

18072357982 is a wasteful number, since it uses less digits than its factorization.

18072357982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44513235.

The product of its (nonzero) digits is 1693440, while the sum is 52.

The spelling of 18072357982 in words is "eighteen billion, seventy-two million, three hundred fifty-seven thousand, nine hundred eighty-two".