2164442605 has 8 divisors (see below), whose sum is σ = 2797125912. Its totient is φ = 1598357568.

The previous prime is 2164442591. The next prime is 2164442633. The reversal of 2164442605 is 5062444612.

It can be written as a sum of positive squares in 4 ways, for example, as 33143049 + 2131299556 = 5757^2 + 46166^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2164442605 - 2⁷ = 2164442477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 16649494 + ... + 16649623.

It is an arithmetic number, because the mean of its divisors is an integer number (349640739).

Almost surely, 2^2164442605 is an apocalyptic number.

It is an amenable number.

2164442605 is a deficient number, since it is larger than the sum of its proper divisors (632683307).

2164442605 is a wasteful number, since it uses less digits than its factorization.

2164442605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33299135.

The product of its (nonzero) digits is 46080, while the sum is 34.

The square root of 2164442605 is about 46523.5704240335. The cubic root of 2164442605 is about 1293.5464388202.

The spelling of 2164442605 in words is "two billion, one hundred sixty-four million, four hundred forty-two thousand, six hundred five".