18804813772 has 24 divisors (see below), whose sum is σ = 35334986400. Its totient is φ = 8724683520.

The previous prime is 18804813757. The next prime is 18804813791. The reversal of 18804813772 is 27731840881.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1942647 + ... + 1952302.

It is an arithmetic number, because the mean of its divisors is an integer number (1472291100).

Almost surely, 2^18804813772 is an apocalyptic number.

It is an amenable number.

18804813772 is a deficient number, since it is larger than the sum of its proper divisors (16530172628).

18804813772 is a wasteful number, since it uses less digits than its factorization.

18804813772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3895041 (or 3895039 counting only the distinct ones).

The product of its (nonzero) digits is 602112, while the sum is 49.

The spelling of 18804813772 in words is "eighteen billion, eight hundred four million, eight hundred thirteen thousand, seven hundred seventy-two".