19904195016 has 32 divisors (see below), whose sum is σ = 55289431200. Its totient is φ = 6634731600.

The previous prime is 19904194957. The next prime is 19904195021. The reversal of 19904195016 is 61059140991.

19904195016 is a `hidden beast` number, since 19 + 90 + 41 + 9 + 501 + 6 = 666.

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, 46074310 + ... + 46074741.

It is an arithmetic number, because the mean of its divisors is an integer number (1727794725).

Almost surely, 2^19904195016 is an apocalyptic number.

It is an amenable number.

19904195016 is an abundant number, since it is smaller than the sum of its proper divisors (35385236184).

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

19904195016 is a wasteful number, since it uses less digits than its factorization.

19904195016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92149066 (or 92149056 counting only the distinct ones).

The product of its (nonzero) digits is 87480, while the sum is 45.

The spelling of 19904195016 in words is "nineteen billion, nine hundred four million, one hundred ninety-five thousand, sixteen".