82113718 has 4 divisors (see below), whose sum is σ = 123170580. Its totient is φ = 41056858.

The previous prime is 82113697. The next prime is 82113739. The reversal of 82113718 is 81731128.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (82113697) and next prime (82113739).

It is a self number, because there is not a number n which added to its sum of digits gives 82113718.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20528428 + ... + 20528431.

It is an arithmetic number, because the mean of its divisors is an integer number (30792645).

Almost surely, 2^82113718 is an apocalyptic number.

82113718 is a deficient number, since it is larger than the sum of its proper divisors (41056862).

82113718 is a wasteful number, since it uses less digits than its factorization.

82113718 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41056861.

The product of its digits is 2688, while the sum is 31.

The square root of 82113718 is about 9061.6619888407. The cubic root of 82113718 is about 434.6488874141.

The spelling of 82113718 in words is "eighty-two million, one hundred thirteen thousand, seven hundred eighteen".