19597431049 has 8 divisors (see below), whose sum is σ = 22426501248. Its totient is φ = 16775720160.

The previous prime is 19597431031. The next prime is 19597431053. The reversal of 19597431049 is 94013479591.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 19597431049 - 2²⁵ = 19563876617 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 19597430987 and 19597431005.

It is not an unprimeable number, because it can be changed into a prime (19597431349) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1834117 + ... + 1844770.

It is an arithmetic number, because the mean of its divisors is an integer number (2803312656).

Almost surely, 2^19597431049 is an apocalyptic number.

It is an amenable number.

19597431049 is a deficient number, since it is larger than the sum of its proper divisors (2829070199).

19597431049 is an equidigital number, since it uses as much as digits as its factorization.

19597431049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3679655.

The product of its (nonzero) digits is 1224720, while the sum is 52.

The spelling of 19597431049 in words is "nineteen billion, five hundred ninety-seven million, four hundred thirty-one thousand, forty-nine".