18673093977 has 8 divisors (see below), whose sum is σ = 24898121664. Its totient is φ = 12448397808.

The previous prime is 18673093969. The next prime is 18673093991. The reversal of 18673093977 is 77939037681.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 18673093977 - 2³ = 18673093969 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18673093977.

It is not an unprimeable number, because it can be changed into a prime (18673073977) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 118348 + ... + 226610.

It is an arithmetic number, because the mean of its divisors is an integer number (3112265208).

Almost surely, 2^18673093977 is an apocalyptic number.

It is an amenable number.

18673093977 is a deficient number, since it is larger than the sum of its proper divisors (6225027687).

18673093977 is a wasteful number, since it uses less digits than its factorization.

18673093977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165759.

The product of its (nonzero) digits is 12002256, while the sum is 60.

The spelling of 18673093977 in words is "eighteen billion, six hundred seventy-three million, ninety-three thousand, nine hundred seventy-seven".