164501894 has 16 divisors (see below), whose sum is σ = 262787328. Its totient is φ = 76962432.

The previous prime is 164501893. The next prime is 164501899. The reversal of 164501894 is 498105461.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164501893) by changing a digit.

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, 8102 + ... + 19865.

It is an arithmetic number, because the mean of its divisors is an integer number (16424208).

Almost surely, 2^164501894 is an apocalyptic number.

164501894 is a deficient number, since it is larger than the sum of its proper divisors (98285434).

164501894 is a wasteful number, since it uses less digits than its factorization.

164501894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28159.

The product of its (nonzero) digits is 34560, while the sum is 38.

The square root of 164501894 is about 12825.8291739755. The cubic root of 164501894 is about 547.9281766917.

The spelling of 164501894 in words is "one hundred sixty-four million, five hundred one thousand, eight hundred ninety-four".