19315930469 has 6 divisors (see below), whose sum is σ = 21231560070. Its totient is φ = 17559936680.

The previous prime is 19315930457. The next prime is 19315930493. The reversal of 19315930469 is 96403951391.

It can be written as a sum of positive squares in only one way, i.e., 15711369025 + 3604561444 = 125345^2 + 60038^2 .

It is a de Polignac number, because none of the positive numbers 2^k-19315930469 is a prime.

It is a super-2 number, since 2×19315930469² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19315930169) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 79817774 + ... + 79818015.

It is an arithmetic number, because the mean of its divisors is an integer number (3538593345).

Almost surely, 2^19315930469 is an apocalyptic number.

It is an amenable number.

19315930469 is a deficient number, since it is larger than the sum of its proper divisors (1915629601).

19315930469 is a wasteful number, since it uses less digits than its factorization.

19315930469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159635811 (or 159635800 counting only the distinct ones).

The product of its (nonzero) digits is 787320, while the sum is 50.

The spelling of 19315930469 in words is "nineteen billion, three hundred fifteen million, nine hundred thirty thousand, four hundred sixty-nine".