18952832091 has 32 divisors (see below), whose sum is σ = 26034877440. Its totient is φ = 12257328384.

The previous prime is 18952832069. The next prime is 18952832099. The reversal of 18952832091 is 19023825981.

It is a de Polignac number, because none of the positive numbers 2^k-18952832091 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18952832091.

It is not an unprimeable number, because it can be changed into a prime (18952832099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21610545 + ... + 21611421.

It is an arithmetic number, because the mean of its divisors is an integer number (813589920).

Almost surely, 2^18952832091 is an apocalyptic number.

18952832091 is a deficient number, since it is larger than the sum of its proper divisors (7082045349).

18952832091 is a wasteful number, since it uses less digits than its factorization.

18952832091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1875.

The product of its (nonzero) digits is 311040, while the sum is 48.

The spelling of 18952832091 in words is "eighteen billion, nine hundred fifty-two million, eight hundred thirty-two thousand, ninety-one".