19089871695 has 16 divisors (see below), whose sum is σ = 33937549920. Its totient is φ = 10181264832.

The previous prime is 19089871663. The next prime is 19089871721. The reversal of 19089871695 is 59617898091.

It is not a de Polignac number, because 19089871695 - 2⁵ = 19089871663 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70703094 + ... + 70703363.

It is an arithmetic number, because the mean of its divisors is an integer number (2121096870).

Almost surely, 2^19089871695 is an apocalyptic number.

19089871695 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

19089871695 is a deficient number, since it is larger than the sum of its proper divisors (14847678225).

19089871695 is a wasteful number, since it uses less digits than its factorization.

19089871695 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141406471 (or 141406465 counting only the distinct ones).

The product of its (nonzero) digits is 9797760, while the sum is 63.

The spelling of 19089871695 in words is "nineteen billion, eighty-nine million, eight hundred seventy-one thousand, six hundred ninety-five".