82189494 has 24 divisors (see below), whose sum is σ = 183822912. Its totient is φ = 26512560.

The previous prime is 82189493. The next prime is 82189507. The reversal of 82189494 is 49498128.

82189494 is a `hidden beast` number, since 82 + 1 + 89 + 494 = 666.

It is a super-2 number, since 2×82189494² = 13510225847952072, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82189493) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 73089 + ... + 74204.

It is an arithmetic number, because the mean of its divisors is an integer number (7659288).

Almost surely, 2^82189494 is an apocalyptic number.

82189494 is an abundant number, since it is smaller than the sum of its proper divisors (101633418).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

82189494 is a wasteful number, since it uses less digits than its factorization.

82189494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147332 (or 147329 counting only the distinct ones).

The product of its digits is 165888, while the sum is 45.

The square root of 82189494 is about 9065.8421561375. The cubic root of 82189494 is about 434.7825468838.

The spelling of 82189494 in words is "eighty-two million, one hundred eighty-nine thousand, four hundred ninety-four".