164944491 has 8 divisors (see below), whose sum is σ = 231501120. Its totient is φ = 104175432.

The previous prime is 164944469. The next prime is 164944499. The reversal of 164944491 is 194449461.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 164944491 - 2⁷ = 164944363 is a prime.

It is a super-2 number, since 2×164944491² = 54413370222498162, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (164944499) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1446825 + ... + 1446938.

It is an arithmetic number, because the mean of its divisors is an integer number (28937640).

Almost surely, 2^164944491 is an apocalyptic number.

164944491 is a deficient number, since it is larger than the sum of its proper divisors (66556629).

164944491 is a wasteful number, since it uses less digits than its factorization.

164944491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2893785.

The product of its digits is 124416, while the sum is 42.

The square root of 164944491 is about 12843.0717120166. The cubic root of 164944491 is about 548.4191420564.

The spelling of 164944491 in words is "one hundred sixty-four million, nine hundred forty-four thousand, four hundred ninety-one".