19109617914 has 16 divisors (see below), whose sum is σ = 38235479328. Its totient is φ = 6367165392.

The previous prime is 19109617909. The next prime is 19109617931. The reversal of 19109617914 is 41971690191.

It is a super-2 number, since 2×19109617914² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

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, 661492 + ... + 689775.

It is an arithmetic number, because the mean of its divisors is an integer number (2389717458).

Almost surely, 2^19109617914 is an apocalyptic number.

19109617914 is an abundant number, since it is smaller than the sum of its proper divisors (19125861414).

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

19109617914 is a wasteful number, since it uses less digits than its factorization.

19109617914 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1353629.

The product of its (nonzero) digits is 122472, while the sum is 48.

The spelling of 19109617914 in words is "nineteen billion, one hundred nine million, six hundred seventeen thousand, nine hundred fourteen".