2173090369 has 2 divisors, whose sum is σ = 2173090370. Its totient is φ = 2173090368.

The previous prime is 2173090349. The next prime is 2173090411. The reversal of 2173090369 is 9630903712.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1435424769 + 737665600 = 37887^2 + 27160^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2173090369 is a prime.

It is a super-2 number, since 2×2173090369² = 9444643503681112322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2173090349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1086545184 + 1086545185.

It is an arithmetic number, because the mean of its divisors is an integer number (1086545185).

Almost surely, 2^2173090369 is an apocalyptic number.

It is an amenable number.

2173090369 is a deficient number, since it is larger than the sum of its proper divisors (1).

2173090369 is an equidigital number, since it uses as much as digits as its factorization.

2173090369 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 61236, while the sum is 40.

The square root of 2173090369 is about 46616.4173762849. The cubic root of 2173090369 is about 1295.2668847636.

It can be divided in two parts, 2 and 173090369, that added together give a palindrome (173090371).

The spelling of 2173090369 in words is "two billion, one hundred seventy-three million, ninety thousand, three hundred sixty-nine".