164718673 has 4 divisors (see below), whose sum is σ = 188249920. Its totient is φ = 141187428.

The previous prime is 164718667. The next prime is 164718677. The reversal of 164718673 is 376817461.

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, and also an emirpimes, since its reverse is a distinct semiprime: 376817461 = 17 ⋅22165733.

It is a cyclic number.

It is not a de Polignac number, because 164718673 - 2⁵ = 164718641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164718677) 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, 11765613 + ... + 11765626.

It is an arithmetic number, because the mean of its divisors is an integer number (47062480).

Almost surely, 2^164718673 is an apocalyptic number.

It is an amenable number.

164718673 is a deficient number, since it is larger than the sum of its proper divisors (23531247).

164718673 is an equidigital number, since it uses as much as digits as its factorization.

164718673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23531246.

The product of its digits is 169344, while the sum is 43.

The square root of 164718673 is about 12834.2772683155. The cubic root of 164718673 is about 548.1687558568.

The spelling of 164718673 in words is "one hundred sixty-four million, seven hundred eighteen thousand, six hundred seventy-three".