18728652670 has 48 divisors (see below), whose sum is σ = 41719168800. Its totient is φ = 5927306112.

The previous prime is 18728652629. The next prime is 18728652689. The reversal of 18728652670 is 7625682781.

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, 779745 + ... + 803404.

It is an arithmetic number, because the mean of its divisors is an integer number (869149350).

Almost surely, 2^18728652670 is an apocalyptic number.

18728652670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18728652670 is an abundant number, since it is smaller than the sum of its proper divisors (22990516130).

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

18728652670 is a wasteful number, since it uses less digits than its factorization.

18728652670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1583189 (or 1583176 counting only the distinct ones).

The product of its (nonzero) digits is 2257920, while the sum is 52.

The spelling of 18728652670 in words is "eighteen billion, seven hundred twenty-eight million, six hundred fifty-two thousand, six hundred seventy".