816872374 has 4 divisors (see below), whose sum is σ = 1225308564. Its totient is φ = 408436186.

The previous prime is 816872369. The next prime is 816872417. The reversal of 816872374 is 473278618.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 204218092 + ... + 204218095.

It is an arithmetic number, because the mean of its divisors is an integer number (306327141).

Almost surely, 2^816872374 is an apocalyptic number.

816872374 is a deficient number, since it is larger than the sum of its proper divisors (408436190).

816872374 is a wasteful number, since it uses less digits than its factorization.

816872374 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408436189.

The product of its digits is 451584, while the sum is 46.

The square root of 816872374 is about 28580.9792344489. The cubic root of 816872374 is about 934.7986350850.

The spelling of 816872374 in words is "eight hundred sixteen million, eight hundred seventy-two thousand, three hundred seventy-four".