2164844623 has 4 divisors (see below), whose sum is σ = 2175833880. Its totient is φ = 2153855368.

The previous prime is 2164844611. The next prime is 2164844641. The reversal of 2164844623 is 3264484612.

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

It is a cyclic number.

It is not a de Polignac number, because 2164844623 - 2¹³ = 2164836431 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2164844603) 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, 5494333 + ... + 5494726.

It is an arithmetic number, because the mean of its divisors is an integer number (543958470).

Almost surely, 2^2164844623 is an apocalyptic number.

2164844623 is a deficient number, since it is larger than the sum of its proper divisors (10989257).

2164844623 is a wasteful number, since it uses less digits than its factorization.

2164844623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10989256.

The product of its digits is 221184, while the sum is 40.

The square root of 2164844623 is about 46527.8908075576. The cubic root of 2164844623 is about 1293.6265205247.

The spelling of 2164844623 in words is "two billion, one hundred sixty-four million, eight hundred forty-four thousand, six hundred twenty-three".