2173264739 has 2 divisors, whose sum is σ = 2173264740. Its totient is φ = 2173264738.

The previous prime is 2173264721. The next prime is 2173264741. The reversal of 2173264739 is 9374623712.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2173264739 - 2¹² = 2173260643 is a prime.

Together with 2173264741, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2173264739.

It is not a weakly prime, because it can be changed into another prime (2173264939) 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 as a sum of consecutive naturals, namely, 1086632369 + 1086632370.

It is an arithmetic number, because the mean of its divisors is an integer number (1086632370).

Almost surely, 2^2173264739 is an apocalyptic number.

2173264739 is a deficient number, since it is larger than the sum of its proper divisors (1).

2173264739 is an equidigital number, since it uses as much as digits as its factorization.

2173264739 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 381024, while the sum is 44.

The square root of 2173264739 is about 46618.2876026136. The cubic root of 2173264739 is about 1295.3015281528.

The spelling of 2173264739 in words is "two billion, one hundred seventy-three million, two hundred sixty-four thousand, seven hundred thirty-nine".