19139703831 has 12 divisors (see below), whose sum is σ = 28538053440. Its totient is φ = 12348195840.

The previous prime is 19139703797. The next prime is 19139703833. The reversal of 19139703831 is 13830793191.

It is not a de Polignac number, because 19139703831 - 2²¹ = 19137606679 is a prime.

It is a super-2 number, since 2×19139703831² (a number of 21 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19139703833) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34300266 + ... + 34300823.

It is an arithmetic number, because the mean of its divisors is an integer number (2378171120).

Almost surely, 2^19139703831 is an apocalyptic number.

19139703831 is a deficient number, since it is larger than the sum of its proper divisors (9398349609).

19139703831 is a wasteful number, since it uses less digits than its factorization.

19139703831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68601126 (or 68601123 counting only the distinct ones).

The product of its (nonzero) digits is 122472, while the sum is 45.

The spelling of 19139703831 in words is "nineteen billion, one hundred thirty-nine million, seven hundred three thousand, eight hundred thirty-one".