18684377670 has 48 divisors (see below), whose sum is σ = 52163736048. Its totient is φ = 4270714560.

The previous prime is 18684377627. The next prime is 18684377711. The reversal of 18684377670 is 7677348681.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 18684377670.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6353761 + ... + 6356700.

It is an arithmetic number, because the mean of its divisors is an integer number (1086744501).

Almost surely, 2^18684377670 is an apocalyptic number.

18684377670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18684377670 is an abundant number, since it is smaller than the sum of its proper divisors (33479358378).

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

18684377670 is a wasteful number, since it uses less digits than its factorization.

18684377670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12710485 (or 12710478 counting only the distinct ones).

The product of its (nonzero) digits is 9483264, while the sum is 57.

The spelling of 18684377670 in words is "eighteen billion, six hundred eighty-four million, three hundred seventy-seven thousand, six hundred seventy".