18639766483 has 8 divisors (see below), whose sum is σ = 20076613200. Its totient is φ = 17203351008.

The previous prime is 18639766447. The next prime is 18639766489. The reversal of 18639766483 is 38466793681.

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

It is a cyclic number.

It is not a de Polignac number, because 18639766483 - 2⁹ = 18639765971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18639766489) 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, 15073 + ... + 193666.

It is an arithmetic number, because the mean of its divisors is an integer number (2509576650).

Almost surely, 2^18639766483 is an apocalyptic number.

18639766483 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

18639766483 is a deficient number, since it is larger than the sum of its proper divisors (1436846717).

18639766483 is a wasteful number, since it uses less digits than its factorization.

18639766483 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215621.

The product of its digits is 31352832, while the sum is 61.

The spelling of 18639766483 in words is "eighteen billion, six hundred thirty-nine million, seven hundred sixty-six thousand, four hundred eighty-three".