164982491 has 16 divisors (see below), whose sum is σ = 177488640. Its totient is φ = 152889120.

The previous prime is 164982457. The next prime is 164982497. The reversal of 164982491 is 194289461.

It is a cyclic number.

It is not a de Polignac number, because 164982491 - 2²⁶ = 97873627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164982497) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 327746 + ... + 328248.

It is an arithmetic number, because the mean of its divisors is an integer number (11093040).

Almost surely, 2^164982491 is an apocalyptic number.

164982491 is a deficient number, since it is larger than the sum of its proper divisors (12506149).

164982491 is a wasteful number, since it uses less digits than its factorization.

164982491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 866.

The product of its digits is 124416, while the sum is 44.

The square root of 164982491 is about 12844.5510236832. The cubic root of 164982491 is about 548.4612538544.

The spelling of 164982491 in words is "one hundred sixty-four million, nine hundred eighty-two thousand, four hundred ninety-one".