18968678930 has 16 divisors (see below), whose sum is σ = 34372776600. Its totient is φ = 7536548352.

The previous prime is 18968678857. The next prime is 18968678957. The reversal of 18968678930 is 3987686981.

It can be written as a sum of positive squares in 4 ways, for example, as 16902340081 + 2066338849 = 130009^2 + 45457^2 .

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, 6363839 + ... + 6366818.

Almost surely, 2^18968678930 is an apocalyptic number.

18968678930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18968678930 is a deficient number, since it is larger than the sum of its proper divisors (15404097670).

18968678930 is a wasteful number, since it uses less digits than its factorization.

18968678930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12730813.

The product of its (nonzero) digits is 31352832, while the sum is 65.

The spelling of 18968678930 in words is "eighteen billion, nine hundred sixty-eight million, six hundred seventy-eight thousand, nine hundred thirty".