2164456201 has 4 divisors (see below), whose sum is σ = 2291777172. Its totient is φ = 2037135232.

The previous prime is 2164456199. The next prime is 2164456219. The reversal of 2164456201 is 1026544612.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1507302976 + 657153225 = 38824^2 + 25635^2 .

It is a cyclic number.

It is not a de Polignac number, because 2164456201 - 2¹ = 2164456199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2164456271) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63660460 + ... + 63660493.

It is an arithmetic number, because the mean of its divisors is an integer number (572944293).

Almost surely, 2^2164456201 is an apocalyptic number.

It is an amenable number.

2164456201 is a deficient number, since it is larger than the sum of its proper divisors (127320971).

2164456201 is a wasteful number, since it uses less digits than its factorization.

2164456201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127320970.

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 2164456201 is about 46523.7165432857. The cubic root of 2164456201 is about 1293.5491472959.

The spelling of 2164456201 in words is "two billion, one hundred sixty-four million, four hundred fifty-six thousand, two hundred one".