816923258 has 16 divisors (see below), whose sum is σ = 1233355200. Its totient is φ = 405811296.

The previous prime is 816923227. The next prime is 816923273. The reversal of 816923258 is 852329618.

It is a super-2 number, since 2×816923258² = 1334727218922669128, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

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 7 ways as a sum of consecutive naturals, for example, 410141 + ... + 412127.

It is an arithmetic number, because the mean of its divisors is an integer number (77084700).

Almost surely, 2^816923258 is an apocalyptic number.

816923258 is a deficient number, since it is larger than the sum of its proper divisors (416431942).

816923258 is a wasteful number, since it uses less digits than its factorization.

816923258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3221.

The product of its digits is 207360, while the sum is 44.

The square root of 816923258 is about 28581.8693930261. The cubic root of 816923258 is about 934.8180446066.

The spelling of 816923258 in words is "eight hundred sixteen million, nine hundred twenty-three thousand, two hundred fifty-eight".