164775478 has 16 divisors (see below), whose sum is σ = 291585024. Its totient is φ = 68339880.

The previous prime is 164775469. The next prime is 164775493. The reversal of 164775478 is 874577461.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 189400 + ... + 190267.

It is an arithmetic number, because the mean of its divisors is an integer number (18224064).

Almost surely, 2^164775478 is an apocalyptic number.

164775478 is a deficient number, since it is larger than the sum of its proper divisors (126809546).

164775478 is a wasteful number, since it uses less digits than its factorization.

164775478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379707.

The product of its digits is 1317120, while the sum is 49.

The square root of 164775478 is about 12836.4900965957. The cubic root of 164775478 is about 548.2317625716.

The spelling of 164775478 in words is "one hundred sixty-four million, seven hundred seventy-five thousand, four hundred seventy-eight".