82163859 has 8 divisors (see below), whose sum is σ = 109639680. Its totient is φ = 54731976.

The previous prime is 82163831. The next prime is 82163863. The reversal of 82163859 is 95836128.

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

It is not a de Polignac number, because 82163859 - 2¹⁷ = 82032787 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 82163859.

It is not an unprimeable number, because it can be changed into a prime (82163819) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6339 + ... + 14300.

It is an arithmetic number, because the mean of its divisors is an integer number (13704960).

Almost surely, 2^82163859 is an apocalyptic number.

82163859 is a deficient number, since it is larger than the sum of its proper divisors (27475821).

82163859 is a wasteful number, since it uses less digits than its factorization.

82163859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21969.

The product of its digits is 103680, while the sum is 42.

The square root of 82163859 is about 9064.4282224529. The cubic root of 82163859 is about 434.7373391205.

The spelling of 82163859 in words is "eighty-two million, one hundred sixty-three thousand, eight hundred fifty-nine".