164965973 has 4 divisors (see below), whose sum is σ = 170287488. Its totient is φ = 159644460.

The previous prime is 164965963. The next prime is 164965981. The reversal of 164965973 is 379569461.

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 164965973 - 2¹⁰ = 164964949 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164965963) 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, 2660711 + ... + 2660772.

It is an arithmetic number, because the mean of its divisors is an integer number (42571872).

Almost surely, 2^164965973 is an apocalyptic number.

It is an amenable number.

164965973 is a deficient number, since it is larger than the sum of its proper divisors (5321515).

164965973 is an equidigital number, since it uses as much as digits as its factorization.

164965973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5321514.

The product of its digits is 1224720, while the sum is 50.

The square root of 164965973 is about 12843.9080111935. The cubic root of 164965973 is about 548.4429493153.

The spelling of 164965973 in words is "one hundred sixty-four million, nine hundred sixty-five thousand, nine hundred seventy-three".