18978482996 has 24 divisors (see below), whose sum is σ = 36508237920. Its totient is φ = 8560728800.

The previous prime is 18978482951. The next prime is 18978483049. The reversal of 18978482996 is 69928487981.

It is a super-2 number, since 2×18978482996² (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 7 ways as a sum of consecutive naturals, for example, 1640531 + ... + 1652058.

It is an arithmetic number, because the mean of its divisors is an integer number (1521176580).

Almost surely, 2^18978482996 is an apocalyptic number.

It is an amenable number.

18978482996 is a deficient number, since it is larger than the sum of its proper divisors (17529754924).

18978482996 is a wasteful number, since it uses less digits than its factorization.

18978482996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3292735 (or 3292733 counting only the distinct ones).

The product of its digits is 125411328, while the sum is 71.

The spelling of 18978482996 in words is "eighteen billion, nine hundred seventy-eight million, four hundred eighty-two thousand, nine hundred ninety-six".