18944055608 has 32 divisors (see below), whose sum is σ = 36796533120. Its totient is φ = 9133824000.

The previous prime is 18944055589. The next prime is 18944055631. The reversal of 18944055608 is 80655044981.

It is a congruent number.

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, 66233 + ... + 205608.

It is an arithmetic number, because the mean of its divisors is an integer number (1149891660).

Almost surely, 2^18944055608 is an apocalyptic number.

It is an amenable number.

18944055608 is a deficient number, since it is larger than the sum of its proper divisors (17852477512).

18944055608 is a wasteful number, since it uses less digits than its factorization.

18944055608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272159 (or 272155 counting only the distinct ones).

The product of its (nonzero) digits is 1382400, while the sum is 50.

The spelling of 18944055608 in words is "eighteen billion, nine hundred forty-four million, fifty-five thousand, six hundred eight".