164953729 has 4 divisors (see below), whose sum is σ = 165057984. Its totient is φ = 164849476.

The previous prime is 164953727. The next prime is 164953739. The reversal of 164953729 is 927359461.

It is a happy number.

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 164953729 - 2¹ = 164953727 is a prime.

It is a super-2 number, since 2×164953729² = 54419465422010882, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164953727) 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, 49717 + ... + 52930.

It is an arithmetic number, because the mean of its divisors is an integer number (41264496).

Almost surely, 2^164953729 is an apocalyptic number.

It is an amenable number.

164953729 is a deficient number, since it is larger than the sum of its proper divisors (104255).

164953729 is a wasteful number, since it uses less digits than its factorization.

164953729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104254.

The product of its digits is 408240, while the sum is 46.

The square root of 164953729 is about 12843.4313561447. The cubic root of 164953729 is about 548.4293802512.

The spelling of 164953729 in words is "one hundred sixty-four million, nine hundred fifty-three thousand, seven hundred twenty-nine".