5165641309 has 2 divisors, whose sum is σ = 5165641310. Its totient is φ = 5165641308.

The previous prime is 5165641289. The next prime is 5165641319. The reversal of 5165641309 is 9031465615.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4493691225 + 671950084 = 67035^2 + 25922^2 .

It is a cyclic number.

It is not a de Polignac number, because 5165641309 - 2¹³ = 5165633117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5165641319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2582820654 + 2582820655.

It is an arithmetic number, because the mean of its divisors is an integer number (2582820655).

Almost surely, 2^5165641309 is an apocalyptic number.

It is an amenable number.

5165641309 is a deficient number, since it is larger than the sum of its proper divisors (1).

5165641309 is an equidigital number, since it uses as much as digits as its factorization.

5165641309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 97200, while the sum is 40.

The square root of 5165641309 is about 71872.3960154384. The cubic root of 5165641309 is about 1728.6540266413.

The spelling of 5165641309 in words is "five billion, one hundred sixty-five million, six hundred forty-one thousand, three hundred nine".