82189733 has 4 divisors (see below), whose sum is σ = 82457760. Its totient is φ = 81921708.

The previous prime is 82189721. The next prime is 82189817. The reversal of 82189733 is 33798128.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 82189733 - 2⁴ = 82189717 is a prime.

It is a super-2 number, since 2×82189733² = 13510304421222578, 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 (82189433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 133553 + ... + 134166.

It is an arithmetic number, because the mean of its divisors is an integer number (20614440).

Almost surely, 2^82189733 is an apocalyptic number.

It is an amenable number.

82189733 is a deficient number, since it is larger than the sum of its proper divisors (268027).

82189733 is a wasteful number, since it uses less digits than its factorization.

82189733 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268026.

The product of its digits is 72576, while the sum is 41.

The square root of 82189733 is about 9065.8553374737. The cubic root of 82189733 is about 434.7829683201.

The spelling of 82189733 in words is "eighty-two million, one hundred eighty-nine thousand, seven hundred thirty-three".