82518889 has 4 divisors (see below), whose sum is σ = 82547856. Its totient is φ = 82489924.

The previous prime is 82518883. The next prime is 82518899. The reversal of 82518889 is 98881528.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 82518889 - 2⁵ = 82518857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82518883) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9679 + ... + 16084.

It is an arithmetic number, because the mean of its divisors is an integer number (20636964).

Almost surely, 2^82518889 is an apocalyptic number.

It is an amenable number.

82518889 is a deficient number, since it is larger than the sum of its proper divisors (28967).

82518889 is a wasteful number, since it uses less digits than its factorization.

82518889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28966.

The product of its digits is 368640, while the sum is 49.

The square root of 82518889 is about 9083.9908080094. The cubic root of 82518889 is about 435.3626060102.

The spelling of 82518889 in words is "eighty-two million, five hundred eighteen thousand, eight hundred eighty-nine".