82189611 has 72 divisors (see below), whose sum is σ = 154187280. Its totient is φ = 41803776.

The previous prime is 82189607. The next prime is 82189633. The reversal of 82189611 is 11698128.

It is not a de Polignac number, because 82189611 - 2² = 82189607 is a prime.

It is not an unprimeable number, because it can be changed into a prime (82189411) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 142155 + ... + 142731.

It is an arithmetic number, because the mean of its divisors is an integer number (2141490).

Almost surely, 2^82189611 is an apocalyptic number.

82189611 is a deficient number, since it is larger than the sum of its proper divisors (71997669).

82189611 is a wasteful number, since it uses less digits than its factorization.

82189611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 633 (or 623 counting only the distinct ones).

The product of its digits is 6912, while the sum is 36.

The square root of 82189611 is about 9065.8486089279. The cubic root of 82189611 is about 434.7827531937.

The spelling of 82189611 in words is "eighty-two million, one hundred eighty-nine thousand, six hundred eleven".