19597431050 has 24 divisors (see below), whose sum is σ = 37138985676. Its totient is φ = 7691066240.

The previous prime is 19597431031. The next prime is 19597431053. The reversal of 19597431050 is 5013479591.

It can be written as a sum of positive squares in 6 ways, for example, as 14474736721 + 5122694329 = 120311^2 + 71573^2 .

It is a junction number, because it is equal to n+sod(n) for n = 19597430992 and 19597431010.

It is not an unprimeable number, because it can be changed into a prime (19597431053) 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, 3694979 + ... + 3700278.

Almost surely, 2^19597431050 is an apocalyptic number.

19597431050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19597431050 is a deficient number, since it is larger than the sum of its proper divisors (17541554626).

19597431050 is a wasteful number, since it uses less digits than its factorization.

19597431050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7395322 (or 7395317 counting only the distinct ones).

The product of its (nonzero) digits is 170100, while the sum is 44.

The spelling of 19597431050 in words is "nineteen billion, five hundred ninety-seven million, four hundred thirty-one thousand, fifty".