7991602049 has 2 divisors, whose sum is σ = 7991602050. Its totient is φ = 7991602048.

The previous prime is 7991602033. The next prime is 7991602111. The reversal of 7991602049 is 9402061997.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6620751424 + 1370850625 = 81368^2 + 37025^2 .

It is a cyclic number.

It is not a de Polignac number, because 7991602049 - 2⁴ = 7991602033 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7991601994 and 7991602012.

It is not a weakly prime, because it can be changed into another prime (7991602019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3995801024 + 3995801025.

It is an arithmetic number, because the mean of its divisors is an integer number (3995801025).

Almost surely, 2^7991602049 is an apocalyptic number.

It is an amenable number.

7991602049 is a deficient number, since it is larger than the sum of its proper divisors (1).

7991602049 is an equidigital number, since it uses as much as digits as its factorization.

7991602049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 244944, while the sum is 47.

The square root of 7991602049 is about 89395.7607999395. The cubic root of 7991602049 is about 1999.2999257266.

The spelling of 7991602049 in words is "seven billion, nine hundred ninety-one million, six hundred two thousand, forty-nine".