18469938492 has 60 divisors (see below), whose sum is σ = 50383395216. Its totient is φ = 5888963520.

The previous prime is 18469938481. The next prime is 18469938521. The reversal of 18469938492 is 29483996481.

18469938492 is a `hidden beast` number, since 1 + 8 + 469 + 9 + 3 + 84 + 92 = 666.

It is a super-2 number, since 2×18469938492² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1231809 + ... + 1246712.

Almost surely, 2^18469938492 is an apocalyptic number.

18469938492 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18469938492 is an abundant number, since it is smaller than the sum of its proper divisors (31913456724).

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

18469938492 is a wasteful number, since it uses less digits than its factorization.

18469938492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2478560 (or 2478549 counting only the distinct ones).

The product of its digits is 26873856, while the sum is 63.

The spelling of 18469938492 in words is "eighteen billion, four hundred sixty-nine million, nine hundred thirty-eight thousand, four hundred ninety-two".