18800379044 has 12 divisors (see below), whose sum is σ = 32902375884. Its totient is φ = 9399700224.

The previous prime is 18800379043. The next prime is 18800379079. The reversal of 18800379044 is 44097300881.

It can be written as a sum of positive squares in 2 ways, for example, as 273902500 + 18526476544 = 16550^2 + 136112^2 .

It is a junction number, because it is equal to n+sod(n) for n = 18800378986 and 18800379004.

It is not an unprimeable number, because it can be changed into a prime (18800379043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27749 + ... + 195884.

It is an arithmetic number, because the mean of its divisors is an integer number (2741864657).

Almost surely, 2^18800379044 is an apocalyptic number.

It is an amenable number.

18800379044 is a deficient number, since it is larger than the sum of its proper divisors (14101996840).

18800379044 is a wasteful number, since it uses less digits than its factorization.

18800379044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244654 (or 244652 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 44.

The spelling of 18800379044 in words is "eighteen billion, eight hundred million, three hundred seventy-nine thousand, forty-four".