18825378628 has 48 divisors (see below), whose sum is σ = 38172556800. Its totient is φ = 7956449280.

The previous prime is 18825378613. The next prime is 18825378647. The reversal of 18825378628 is 82687352881.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2050368 + ... + 2059528.

It is an arithmetic number, because the mean of its divisors is an integer number (795261600).

Almost surely, 2^18825378628 is an apocalyptic number.

It is an amenable number.

18825378628 is an abundant number, since it is smaller than the sum of its proper divisors (19347178172).

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

18825378628 is a wasteful number, since it uses less digits than its factorization.

18825378628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10180 (or 10178 counting only the distinct ones).

The product of its digits is 10321920, while the sum is 58.

The spelling of 18825378628 in words is "eighteen billion, eight hundred twenty-five million, three hundred seventy-eight thousand, six hundred twenty-eight".