816913383250 has 16 divisors (see below), whose sum is σ = 1529261853912. Its totient is φ = 326765353200.

The previous prime is 816913383197. The next prime is 816913383269. The reversal of 816913383250 is 52383319618.

It can be written as a sum of positive squares in 4 ways, for example, as 449220317121 + 367693066129 = 670239^2 + 606377^2 .

It is a super-2 number, since 2×816913383250² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 816913383194 and 816913383203.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1633826517 + ... + 1633827016.

Almost surely, 2^816913383250 is an apocalyptic number.

816913383250 is a deficient number, since it is larger than the sum of its proper divisors (712348470662).

816913383250 is a wasteful number, since it uses less digits than its factorization.

816913383250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3267653550 (or 3267653540 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 49.

The spelling of 816913383250 in words is "eight hundred sixteen billion, nine hundred thirteen million, three hundred eighty-three thousand, two hundred fifty".