82318197 has 16 divisors (see below), whose sum is σ = 120718080. Its totient is φ = 49578432.

The previous prime is 82318189. The next prime is 82318253. The reversal of 82318197 is 79181328.

It is not a de Polignac number, because 82318197 - 2³ = 82318189 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82318597) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20622 + ... + 24287.

It is an arithmetic number, because the mean of its divisors is an integer number (7544880).

Almost surely, 2^82318197 is an apocalyptic number.

It is an amenable number.

82318197 is a deficient number, since it is larger than the sum of its proper divisors (38399883).

82318197 is a wasteful number, since it uses less digits than its factorization.

82318197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44972.

The product of its digits is 24192, while the sum is 39.

The square root of 82318197 is about 9072.9376168912. The cubic root of 82318197 is about 435.0093748805.

The spelling of 82318197 in words is "eighty-two million, three hundred eighteen thousand, one hundred ninety-seven".