82618831 has 2 divisors, whose sum is σ = 82618832. Its totient is φ = 82618830.

The previous prime is 82618819. The next prime is 82618889. The reversal of 82618831 is 13881628.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 82618831 - 2⁵ = 82618799 is a prime.

It is a super-2 number, since 2×82618831² = 13651742471613122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82618331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41309415 + 41309416.

It is an arithmetic number, because the mean of its divisors is an integer number (41309416).

Almost surely, 2^82618831 is an apocalyptic number.

82618831 is a deficient number, since it is larger than the sum of its proper divisors (1).

82618831 is an equidigital number, since it uses as much as digits as its factorization.

82618831 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18432, while the sum is 37.

The square root of 82618831 is about 9089.4901397163. The cubic root of 82618831 is about 435.5382969174.

The spelling of 82618831 in words is "eighty-two million, six hundred eighteen thousand, eight hundred thirty-one".