5156818049 has 2 divisors, whose sum is σ = 5156818050. Its totient is φ = 5156818048.

The previous prime is 5156818031. The next prime is 5156818087. The reversal of 5156818049 is 9408186515.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4446222400 + 710595649 = 66680^2 + 26657^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5156818049 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 5156817994 and 5156818012.

It is not a weakly prime, because it can be changed into another prime (5156818099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2578409024 + 2578409025.

It is an arithmetic number, because the mean of its divisors is an integer number (2578409025).

Almost surely, 2^5156818049 is an apocalyptic number.

It is an amenable number.

5156818049 is a deficient number, since it is larger than the sum of its proper divisors (1).

5156818049 is an equidigital number, since it uses as much as digits as its factorization.

5156818049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 345600, while the sum is 47.

The square root of 5156818049 is about 71810.9883583286. The cubic root of 5156818049 is about 1727.6692469349.

The spelling of 5156818049 in words is "five billion, one hundred fifty-six million, eight hundred eighteen thousand, forty-nine".