164476509 has 8 divisors (see below), whose sum is σ = 219693792. Its totient is φ = 109455120.

The previous prime is 164476493. The next prime is 164476517. The reversal of 164476509 is 905674461.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 164476509 - 2⁴ = 164476493 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164476579) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47002 + ... + 50379.

It is an arithmetic number, because the mean of its divisors is an integer number (27461724).

Almost surely, 2^164476509 is an apocalyptic number.

It is an amenable number.

164476509 is a deficient number, since it is larger than the sum of its proper divisors (55217283).

164476509 is an equidigital number, since it uses as much as digits as its factorization.

164476509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97947.

The product of its (nonzero) digits is 181440, while the sum is 42.

The square root of 164476509 is about 12824.8395311598. The cubic root of 164476509 is about 547.8999908515.

The spelling of 164476509 in words is "one hundred sixty-four million, four hundred seventy-six thousand, five hundred nine".