816246918 has 24 divisors (see below), whose sum is σ = 1769106456. Its totient is φ = 271994400.

The previous prime is 816246889. The next prime is 816246967. The reversal of 816246918 is 819642618.

816246918 is a `hidden beast` number, since 8 + 1 + 624 + 6 + 9 + 18 = 666.

It is a super-2 number, since 2×816246918² = 1332518062288997448, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 74833 + ... + 85043.

It is an arithmetic number, because the mean of its divisors is an integer number (73712769).

Almost surely, 2^816246918 is an apocalyptic number.

816246918 is an abundant number, since it is smaller than the sum of its proper divisors (952859538).

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

816246918 is a wasteful number, since it uses less digits than its factorization.

816246918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14660 (or 14657 counting only the distinct ones).

The product of its digits is 165888, while the sum is 45.

The square root of 816246918 is about 28570.0353167440. The cubic root of 816246918 is about 934.5599912363.

The spelling of 816246918 in words is "eight hundred sixteen million, two hundred forty-six thousand, nine hundred eighteen".