816683418 has 16 divisors (see below), whose sum is σ = 1814852160. Its totient is φ = 272227788.

The previous prime is 816683377. The next prime is 816683459. The reversal of 816683418 is 814386618.

It is a happy number.

816683418 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (816683377) and next prime (816683459).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7561830 + ... + 7561937.

It is an arithmetic number, because the mean of its divisors is an integer number (113428260).

Almost surely, 2^816683418 is an apocalyptic number.

816683418 is an abundant number, since it is smaller than the sum of its proper divisors (998168742).

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

816683418 is a wasteful number, since it uses less digits than its factorization.

816683418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15123778 (or 15123772 counting only the distinct ones).

The product of its digits is 221184, while the sum is 45.

The square root of 816683418 is about 28577.6734182473. The cubic root of 816683418 is about 934.7265514328.

The spelling of 816683418 in words is "eight hundred sixteen million, six hundred eighty-three thousand, four hundred eighteen".