20164001 has 24 divisors (see below), whose sum is σ = 24583104. Its totient is φ = 16303680.

The previous prime is 20163991. The next prime is 20164003. The reversal of 20164001 is 10046102.

It is not a de Polignac number, because 20164001 - 2¹⁸ = 19901857 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20164003) 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 23 ways as a sum of consecutive naturals, for example, 195716 + ... + 195818.

It is an arithmetic number, because the mean of its divisors is an integer number (1024296).

Almost surely, 2^20164001 is an apocalyptic number.

It is an amenable number.

20164001 is a deficient number, since it is larger than the sum of its proper divisors (4419103).

20164001 is a wasteful number, since it uses less digits than its factorization.

20164001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201 (or 164 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 20164001 is about 4490.4343887869. The cubic root of 20164001 is about 272.1816881909.

The spelling of 20164001 in words is "twenty million, one hundred sixty-four thousand, one".