18437768228 has 12 divisors (see below), whose sum is σ = 35199375792. Its totient is φ = 8380803720.

The previous prime is 18437768213. The next prime is 18437768269. The reversal of 18437768228 is 82286773481.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 209520050 + ... + 209520137.

It is an arithmetic number, because the mean of its divisors is an integer number (2933281316).

Almost surely, 2^18437768228 is an apocalyptic number.

It is an amenable number.

18437768228 is a deficient number, since it is larger than the sum of its proper divisors (16761607564).

18437768228 is a wasteful number, since it uses less digits than its factorization.

18437768228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 419040202 (or 419040200 counting only the distinct ones).

The product of its digits is 7225344, while the sum is 56.

The spelling of 18437768228 in words is "eighteen billion, four hundred thirty-seven million, seven hundred sixty-eight thousand, two hundred twenty-eight".