2164937399 has 16 divisors (see below), whose sum is σ = 2293885440. Its totient is φ = 2039130720.

The previous prime is 2164937381. The next prime is 2164937413. The reversal of 2164937399 is 9937394612.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 2164937399 - 2⁸ = 2164937143 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2164937399.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2164937329) 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 15 ways as a sum of consecutive naturals, for example, 416084 + ... + 421254.

It is an arithmetic number, because the mean of its divisors is an integer number (143367840).

Almost surely, 2^2164937399 is an apocalyptic number.

2164937399 is a deficient number, since it is larger than the sum of its proper divisors (128948041).

2164937399 is a wasteful number, since it uses less digits than its factorization.

2164937399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5470.

The product of its digits is 2204496, while the sum is 53.

The square root of 2164937399 is about 46528.8877902750. The cubic root of 2164937399 is about 1293.6450000310.

The spelling of 2164937399 in words is "two billion, one hundred sixty-four million, nine hundred thirty-seven thousand, three hundred ninety-nine".