816395337 has 12 divisors (see below), whose sum is σ = 1179991540. Its totient is φ = 543915648.

The previous prime is 816395329. The next prime is 816395339. The reversal of 816395337 is 733593618.

816395337 is a `hidden beast` number, since 8 + 1 + 639 + 5 + 3 + 3 + 7 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 403045776 + 413349561 = 20076^2 + 20331^2 .

It is not a de Polignac number, because 816395337 - 2³ = 816395329 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 816395292 and 816395301.

It is not an unprimeable number, because it can be changed into a prime (816395339) 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, 13708 + ... + 42669.

Almost surely, 2^816395337 is an apocalyptic number.

It is an amenable number.

816395337 is a deficient number, since it is larger than the sum of its proper divisors (363596203).

816395337 is a wasteful number, since it uses less digits than its factorization.

816395337 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57992 (or 57989 counting only the distinct ones).

The product of its digits is 408240, while the sum is 45.

The square root of 816395337 is about 28572.6326578424. The cubic root of 816395337 is about 934.6166317985.

The spelling of 816395337 in words is "eight hundred sixteen million, three hundred ninety-five thousand, three hundred thirty-seven".