816994358 has 8 divisors (see below), whose sum is σ = 1246262760. Its totient is φ = 401573440.

The previous prime is 816994337. The next prime is 816994393. The reversal of 816994358 is 853499618.

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

It is a Curzon number.

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 3 ways as a sum of consecutive naturals, for example, 3461723 + ... + 3461958.

It is an arithmetic number, because the mean of its divisors is an integer number (155782845).

Almost surely, 2^816994358 is an apocalyptic number.

816994358 is a deficient number, since it is larger than the sum of its proper divisors (429268402).

816994358 is a wasteful number, since it uses less digits than its factorization.

816994358 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6923742.

The product of its digits is 1866240, while the sum is 53.

The square root of 816994358 is about 28583.1131614455. The cubic root of 816994358 is about 934.8451641001.

The spelling of 816994358 in words is "eight hundred sixteen million, nine hundred ninety-four thousand, three hundred fifty-eight".