164709953 has 4 divisors (see below), whose sum is σ = 164776068. Its totient is φ = 164643840.

The previous prime is 164709947. The next prime is 164710003. The reversal of 164709953 is 359907461.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 102252544 + 62457409 = 10112^2 + 7903^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-164709953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164709053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29168 + ... + 34353.

It is an arithmetic number, because the mean of its divisors is an integer number (41194017).

Almost surely, 2^164709953 is an apocalyptic number.

It is an amenable number.

164709953 is a deficient number, since it is larger than the sum of its proper divisors (66115).

164709953 is an equidigital number, since it uses as much as digits as its factorization.

164709953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66114.

The product of its (nonzero) digits is 204120, while the sum is 44.

The square root of 164709953 is about 12833.9375485468. The cubic root of 164709953 is about 548.1590825639.

The spelling of 164709953 in words is "one hundred sixty-four million, seven hundred nine thousand, nine hundred fifty-three".