19315690000 has 50 divisors (see below), whose sum is σ = 46765241270. Its totient is φ = 7726272000.

The previous prime is 19315689983. The next prime is 19315690067. The reversal of 19315690000 is 9651391.

It can be written as a sum of positive squares in 5 ways, for example, as 8289009936 + 11026680064 = 91044^2 + 105008^2 .

It is a tau number, because it is divible by the number of its divisors (50).

It is a super-2 number, since 2×19315690000² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 955785 + ... + 975784.

Almost surely, 2^19315690000 is an apocalyptic number.

19315690000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19315690000 is an abundant number, since it is smaller than the sum of its proper divisors (27449551270).

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

19315690000 is an equidigital number, since it uses as much as digits as its factorization.

19315690000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1931597 (or 1931576 counting only the distinct ones).

The product of its (nonzero) digits is 7290, while the sum is 34.

The spelling of 19315690000 in words is "nineteen billion, three hundred fifteen million, six hundred ninety thousand".