18519428109964 has 12 divisors (see below), whose sum is σ = 32645561231304. Its totient is φ = 9192124901024.

The previous prime is 18519428109953. The next prime is 18519428110003. The reversal of 18519428109964 is 46990182491581.

It is a self number, because there is not a number n which added to its sum of digits gives 18519428109964.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16897287874 + ... + 16897288969.

It is an arithmetic number, because the mean of its divisors is an integer number (2720463435942).

Almost surely, 2^{18519428109964} is an apocalyptic number.

It is an amenable number.

18519428109964 is a deficient number, since it is larger than the sum of its proper divisors (14126133121340).

18519428109964 is a wasteful number, since it uses less digits than its factorization.

18519428109964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33794576984 (or 33794576982 counting only the distinct ones).

The product of its (nonzero) digits is 44789760, while the sum is 67.

The spelling of 18519428109964 in words is "eighteen trillion, five hundred nineteen billion, four hundred twenty-eight million, one hundred nine thousand, nine hundred sixty-four".