164023895 has 32 divisors (see below), whose sum is σ = 229312512. Its totient is φ = 110316672.

The previous prime is 164023891. The next prime is 164023927. The reversal of 164023895 is 598320461.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 164023895 - 2² = 164023891 is a prime.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164023891) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 623534 + ... + 623796.

It is an arithmetic number, because the mean of its divisors is an integer number (7166016).

Almost surely, 2^164023895 is an apocalyptic number.

164023895 is a deficient number, since it is larger than the sum of its proper divisors (65288617).

164023895 is a wasteful number, since it uses less digits than its factorization.

164023895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 551.

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 164023895 is about 12807.1813838955. The cubic root of 164023895 is about 547.3969503655.

The spelling of 164023895 in words is "one hundred sixty-four million, twenty-three thousand, eight hundred ninety-five".