82193818 has 8 divisors (see below), whose sum is σ = 140903712. Its totient is φ = 35225916.

The previous prime is 82193809. The next prime is 82193843. The reversal of 82193818 is 81839128.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2935480 + ... + 2935507.

It is an arithmetic number, because the mean of its divisors is an integer number (17612964).

Almost surely, 2^82193818 is an apocalyptic number.

82193818 is a deficient number, since it is larger than the sum of its proper divisors (58709894).

82193818 is a wasteful number, since it uses less digits than its factorization.

82193818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5870996.

The product of its digits is 27648, while the sum is 40.

The square root of 82193818 is about 9066.0806305702. The cubic root of 82193818 is about 434.7901714056.

The spelling of 82193818 in words is "eighty-two million, one hundred ninety-three thousand, eight hundred eighteen".