18957120344 has 16 divisors (see below), whose sum is σ = 37415369400. Its totient is φ = 8979688512.

The previous prime is 18957120319. The next prime is 18957120409. The reversal of 18957120344 is 44302175981.

It is a junction number, because it is equal to n+sod(n) for n = 18957120295 and 18957120304.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62358797 + ... + 62359100.

Almost surely, 2^18957120344 is an apocalyptic number.

It is an amenable number.

18957120344 is a deficient number, since it is larger than the sum of its proper divisors (18458249056).

18957120344 is a wasteful number, since it uses less digits than its factorization.

18957120344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124717922 (or 124717918 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 44.

The spelling of 18957120344 in words is "eighteen billion, nine hundred fifty-seven million, one hundred twenty thousand, three hundred forty-four".