5165779849 has 2 divisors, whose sum is σ = 5165779850. Its totient is φ = 5165779848.

The previous prime is 5165779799. The next prime is 5165779897. The reversal of 5165779849 is 9489775615.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3236813449 + 1928966400 = 56893^2 + 43920^2 .

It is a cyclic number.

It is not a de Polignac number, because 5165779849 - 2⁷ = 5165779721 is a prime.

It is not a weakly prime, because it can be changed into another prime (5165779049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2582889924 + 2582889925.

It is an arithmetic number, because the mean of its divisors is an integer number (2582889925).

Almost surely, 2^5165779849 is an apocalyptic number.

It is an amenable number.

5165779849 is a deficient number, since it is larger than the sum of its proper divisors (1).

5165779849 is an equidigital number, since it uses as much as digits as its factorization.

5165779849 is an evil number, because the sum of its binary digits is even.

The product of its digits is 19051200, while the sum is 61.

The square root of 5165779849 is about 71873.3598004156. The cubic root of 5165779849 is about 1728.6694803913.

The spelling of 5165779849 in words is "five billion, one hundred sixty-five million, seven hundred seventy-nine thousand, eight hundred forty-nine".