164163385 has 16 divisors (see below), whose sum is σ = 202405392. Its totient is φ = 127744000.

The previous prime is 164163371. The next prime is 164163409. The reversal of 164163385 is 583361461.

It can be written as a sum of positive squares in 8 ways, for example, as 16613776 + 147549609 = 4076^2 + 12147^2 .

It is not a de Polignac number, because 164163385 - 2⁵ = 164163353 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 81207 + ... + 83203.

It is an arithmetic number, because the mean of its divisors is an integer number (12650337).

Almost surely, 2^164163385 is an apocalyptic number.

It is an amenable number.

164163385 is a deficient number, since it is larger than the sum of its proper divisors (38242007).

164163385 is a wasteful number, since it uses less digits than its factorization.

164163385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2444.

The product of its digits is 51840, while the sum is 37.

The square root of 164163385 is about 12812.6259993805. The cubic root of 164163385 is about 547.5520797258.

The spelling of 164163385 in words is "one hundred sixty-four million, one hundred sixty-three thousand, three hundred eighty-five".