164445801 has 16 divisors (see below), whose sum is σ = 236678400. Its totient is φ = 100961280.

The previous prime is 164445773. The next prime is 164445829. The reversal of 164445801 is 108544461.

It is an interprime number because it is at equal distance from previous prime (164445773) and next prime (164445829).

It is not a de Polignac number, because 164445801 - 2⁵ = 164445769 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (164445901) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12816 + ... + 22206.

It is an arithmetic number, because the mean of its divisors is an integer number (14792400).

Almost surely, 2^164445801 is an apocalyptic number.

It is an amenable number.

164445801 is a deficient number, since it is larger than the sum of its proper divisors (72232599).

164445801 is a wasteful number, since it uses less digits than its factorization.

164445801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9856.

The product of its (nonzero) digits is 15360, while the sum is 33.

The square root of 164445801 is about 12823.6422673124. The cubic root of 164445801 is about 547.8658908247.

The spelling of 164445801 in words is "one hundred sixty-four million, four hundred forty-five thousand, eight hundred one".