816812942 has 8 divisors (see below), whose sum is σ = 1336603032. Its totient is φ = 371278600.

The previous prime is 816812873. The next prime is 816812951. The reversal of 816812942 is 249218618.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 816812942.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18563909 + ... + 18563952.

It is an arithmetic number, because the mean of its divisors is an integer number (167075379).

Almost surely, 2^816812942 is an apocalyptic number.

816812942 is a deficient number, since it is larger than the sum of its proper divisors (519790090).

816812942 is a wasteful number, since it uses less digits than its factorization.

816812942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37127874.

The product of its digits is 55296, while the sum is 41.

The square root of 816812942 is about 28579.9395030850. The cubic root of 816812942 is about 934.7759639384.

The spelling of 816812942 in words is "eight hundred sixteen million, eight hundred twelve thousand, nine hundred forty-two".