2164323646 has 16 divisors (see below), whose sum is σ = 3303490320. Its totient is φ = 1063244160.

The previous prime is 2164323631. The next prime is 2164323661. The reversal of 2164323646 is 6463234612.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2164323631) and next prime (2164323661).

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, 31366 + ... + 72886.

It is an arithmetic number, because the mean of its divisors is an integer number (206468145).

Almost surely, 2^2164323646 is an apocalyptic number.

2164323646 is a deficient number, since it is larger than the sum of its proper divisors (1139166674).

2164323646 is a wasteful number, since it uses less digits than its factorization.

2164323646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41979.

The product of its digits is 124416, while the sum is 37.

The square root of 2164323646 is about 46522.2919254845. The cubic root of 2164323646 is about 1293.5227403694.

The spelling of 2164323646 in words is "two billion, one hundred sixty-four million, three hundred twenty-three thousand, six hundred forty-six".