18968678927 has 16 divisors (see below), whose sum is σ = 21039783072. Its totient is φ = 16957624320.

The previous prime is 18968678857. The next prime is 18968678957. The reversal of 18968678927 is 72987686981.

It is a cyclic number.

It is not a de Polignac number, because 18968678927 - 2¹² = 18968674831 is a prime.

It is a super-2 number, since 2×18968678927² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18968678957) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 110903 + ... + 224135.

It is an arithmetic number, because the mean of its divisors is an integer number (1314986442).

Almost surely, 2^18968678927 is an apocalyptic number.

18968678927 is a deficient number, since it is larger than the sum of its proper divisors (2071104145).

18968678927 is a wasteful number, since it uses less digits than its factorization.

18968678927 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113498.

The product of its digits is 146313216, while the sum is 71.

The spelling of 18968678927 in words is "eighteen billion, nine hundred sixty-eight million, six hundred seventy-eight thousand, nine hundred twenty-seven".