18823676817 has 32 divisors (see below), whose sum is σ = 27674519040. Its totient is φ = 11380050000.

The previous prime is 18823676803. The next prime is 18823676831. The reversal of 18823676817 is 71867632881.

It is an interprime number because it is at equal distance from previous prime (18823676803) and next prime (18823676831).

It is not a de Polignac number, because 18823676817 - 2³² = 14528709521 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18823676117) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1667442 + ... + 1678692.

It is an arithmetic number, because the mean of its divisors is an integer number (864828720).

Almost surely, 2^18823676817 is an apocalyptic number.

It is an amenable number.

18823676817 is a deficient number, since it is larger than the sum of its proper divisors (8850842223).

18823676817 is a wasteful number, since it uses less digits than its factorization.

18823676817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11706 (or 11684 counting only the distinct ones).

The product of its digits is 5419008, while the sum is 57.

The spelling of 18823676817 in words is "eighteen billion, eight hundred twenty-three million, six hundred seventy-six thousand, eight hundred seventeen".