82194631 has 4 divisors (see below), whose sum is σ = 82221352. Its totient is φ = 82167912.

The previous prime is 82194583. The next prime is 82194659. The reversal of 82194631 is 13649128.

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

It is a cyclic number.

It is not a de Polignac number, because 82194631 - 2⁷ = 82194503 is a prime.

It is a super-2 number, since 2×82194631² = 13511914730452322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82192631) 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 3 ways as a sum of consecutive naturals, for example, 8040 + ... + 15133.

It is an arithmetic number, because the mean of its divisors is an integer number (20555338).

Almost surely, 2^82194631 is an apocalyptic number.

82194631 is a deficient number, since it is larger than the sum of its proper divisors (26721).

82194631 is a wasteful number, since it uses less digits than its factorization.

82194631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26720.

The product of its digits is 10368, while the sum is 34.

The square root of 82194631 is about 9066.1254679163. The cubic root of 82194631 is about 434.7916049410.

The spelling of 82194631 in words is "eighty-two million, one hundred ninety-four thousand, six hundred thirty-one".