164764459 has 4 divisors (see below), whose sum is σ = 174456504. Its totient is φ = 155072416.

The previous prime is 164764429. The next prime is 164764463. The reversal of 164764459 is 954467461.

164764459 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 954467461 = 67 ⋅14245783.

It is a cyclic number.

It is not a de Polignac number, because 164764459 - 2⁷ = 164764331 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164764429) 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, 4845997 + ... + 4846030.

It is an arithmetic number, because the mean of its divisors is an integer number (43614126).

Almost surely, 2^164764459 is an apocalyptic number.

164764459 is a deficient number, since it is larger than the sum of its proper divisors (9692045).

164764459 is an equidigital number, since it uses as much as digits as its factorization.

164764459 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9692044.

The product of its digits is 725760, while the sum is 46.

The square root of 164764459 is about 12836.0608833084. The cubic root of 164764459 is about 548.2195416988.

The spelling of 164764459 in words is "one hundred sixty-four million, seven hundred sixty-four thousand, four hundred fifty-nine".