82915819 has 8 divisors (see below), whose sum is σ = 94855680. Its totient is φ = 70999656.

The previous prime is 82915813. The next prime is 82915823. The reversal of 82915819 is 91851928.

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

It is not a de Polignac number, because 82915819 - 2⁵ = 82915787 is a prime.

It is a super-2 number, since 2×82915819² = 13750066080881522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82915813) 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, 2352 + ... + 13090.

It is an arithmetic number, because the mean of its divisors is an integer number (11856960).

Almost surely, 2^82915819 is an apocalyptic number.

82915819 is a deficient number, since it is larger than the sum of its proper divisors (11939861).

82915819 is a wasteful number, since it uses less digits than its factorization.

82915819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11849.

The product of its digits is 51840, while the sum is 43.

The square root of 82915819 is about 9105.8123745221. The cubic root of 82915819 is about 436.0595459873.

The spelling of 82915819 in words is "eighty-two million, nine hundred fifteen thousand, eight hundred nineteen".