164609465 has 16 divisors (see below), whose sum is σ = 203164416. Its totient is φ = 127958400.

The previous prime is 164609449. The next prime is 164609477. The reversal of 164609465 is 564906461.

It is not a de Polignac number, because 164609465 - 2⁴ = 164609449 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54074 + ... + 57036.

It is an arithmetic number, because the mean of its divisors is an integer number (12697776).

Almost surely, 2^164609465 is an apocalyptic number.

It is an amenable number.

164609465 is a deficient number, since it is larger than the sum of its proper divisors (38554951).

164609465 is a wasteful number, since it uses less digits than its factorization.

164609465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3280.

The product of its (nonzero) digits is 155520, while the sum is 41.

The square root of 164609465 is about 12830.0220186873. The cubic root of 164609465 is about 548.0475843117.

The spelling of 164609465 in words is "one hundred sixty-four million, six hundred nine thousand, four hundred sixty-five".