19137032091 has 6 divisors (see below), whose sum is σ = 27642379700. Its totient is φ = 12758021388.

The previous prime is 19137032063. The next prime is 19137032099. The reversal of 19137032091 is 19023073191.

It is a happy number.

It is not a de Polignac number, because 19137032091 - 2⁵ = 19137032059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19137032099) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1063168441 + ... + 1063168458.

Almost surely, 2^19137032091 is an apocalyptic number.

19137032091 is a deficient number, since it is larger than the sum of its proper divisors (8505347609).

19137032091 is a wasteful number, since it uses less digits than its factorization.

19137032091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2126336905 (or 2126336902 counting only the distinct ones).

The product of its (nonzero) digits is 10206, while the sum is 36.

The spelling of 19137032091 in words is "nineteen billion, one hundred thirty-seven million, thirty-two thousand, ninety-one".