18736976994 has 16 divisors (see below), whose sum is σ = 37837780032. Its totient is φ = 6185021328.

The previous prime is 18736976987. The next prime is 18736977001. The reversal of 18736976994 is 49967963781.

It is an interprime number because it is at equal distance from previous prime (18736976987) and next prime (18736977001).

It is a Curzon 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, 15158749 + ... + 15159984.

It is an arithmetic number, because the mean of its divisors is an integer number (2364861252).

Almost surely, 2^18736976994 is an apocalyptic number.

18736976994 is an abundant number, since it is smaller than the sum of its proper divisors (19100803038).

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

18736976994 is a wasteful number, since it uses less digits than its factorization.

18736976994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30318841.

The product of its digits is 123451776, while the sum is 69.

The spelling of 18736976994 in words is "eighteen billion, seven hundred thirty-six million, nine hundred seventy-six thousand, nine hundred ninety-four".