19315992 has 16 divisors (see below), whose sum is σ = 48290040. Its totient is φ = 6438656.

The previous prime is 19315991. The next prime is 19316023. The reversal of 19315992 is 29951391.

It is a self number, because there is not a number n which added to its sum of digits gives 19315992.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19315991) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 402393 + ... + 402440.

Almost surely, 2^19315992 is an apocalyptic number.

19315992 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

19315992 is an abundant number, since it is smaller than the sum of its proper divisors (28974048).

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

19315992 is a wasteful number, since it uses less digits than its factorization.

19315992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 804842 (or 804838 counting only the distinct ones).

The product of its digits is 21870, while the sum is 39.

The square root of 19315992 is about 4394.9962457322. The cubic root of 19315992 is about 268.3113260331.

The spelling of 19315992 in words is "nineteen million, three hundred fifteen thousand, nine hundred ninety-two".