19366400916 has 24 divisors (see below), whose sum is σ = 50209187840. Its totient is φ = 6455466936.

The previous prime is 19366400909. The next prime is 19366400939. The reversal of 19366400916 is 61900466391.

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, 89659156 + ... + 89659371.

Almost surely, 2^19366400916 is an apocalyptic number.

It is an amenable number.

19366400916 is an abundant number, since it is smaller than the sum of its proper divisors (30842786924).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19366400916 is a wasteful number, since it uses less digits than its factorization.

19366400916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179318540 (or 179318532 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 45.

The spelling of 19366400916 in words is "nineteen billion, three hundred sixty-six million, four hundred thousand, nine hundred sixteen".