19894632275 has 24 divisors (see below), whose sum is σ = 28205709600. Its totient is φ = 13636143360.

The previous prime is 19894632259. The next prime is 19894632283. The reversal of 19894632275 is 57223649891.

It is not a de Polignac number, because 19894632275 - 2⁴ = 19894632259 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 19894632275.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 403151 + ... + 449799.

It is an arithmetic number, because the mean of its divisors is an integer number (1175237900).

Almost surely, 2^19894632275 is an apocalyptic number.

19894632275 is a deficient number, since it is larger than the sum of its proper divisors (8311077325).

19894632275 is a wasteful number, since it uses less digits than its factorization.

19894632275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49103 (or 49098 counting only the distinct ones).

The product of its digits is 6531840, while the sum is 56.

The spelling of 19894632275 in words is "nineteen billion, eight hundred ninety-four million, six hundred thirty-two thousand, two hundred seventy-five".