816852166 has 16 divisors (see below), whose sum is σ = 1350219024. Its totient is φ = 368240544.

The previous prime is 816852137. The next prime is 816852191. The reversal of 816852166 is 661258618.

It is a super-2 number, since 2×816852166² = 1334494922197783112, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a congruent number.

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, 364201 + ... + 366436.

It is an arithmetic number, because the mean of its divisors is an integer number (84388689).

Almost surely, 2^816852166 is an apocalyptic number.

816852166 is a gapful number since it is divisible by the number (86) formed by its first and last digit.

816852166 is a deficient number, since it is larger than the sum of its proper divisors (533366858).

816852166 is a wasteful number, since it uses less digits than its factorization.

816852166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 730695.

The product of its digits is 138240, while the sum is 43.

The square root of 816852166 is about 28580.6257104354. The cubic root of 816852166 is about 934.7909265913.

The spelling of 816852166 in words is "eight hundred sixteen million, eight hundred fifty-two thousand, one hundred sixty-six".