7191799057 has 2 divisors, whose sum is σ = 7191799058. Its totient is φ = 7191799056.

The previous prime is 7191799037. The next prime is 7191799067. The reversal of 7191799057 is 7509971917.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5213417616 + 1978381441 = 72204^2 + 44479^2 .

It is a cyclic number.

It is not a de Polignac number, because 7191799057 - 2¹¹ = 7191797009 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7191798989 and 7191799007.

It is not a weakly prime, because it can be changed into another prime (7191799037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3595899528 + 3595899529.

It is an arithmetic number, because the mean of its divisors is an integer number (3595899529).

Almost surely, 2^7191799057 is an apocalyptic number.

It is an amenable number.

7191799057 is a deficient number, since it is larger than the sum of its proper divisors (1).

7191799057 is an equidigital number, since it uses as much as digits as its factorization.

7191799057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1250235, while the sum is 55.

The square root of 7191799057 is about 84804.4754538344. The cubic root of 7191799057 is about 1930.2453496244.

The spelling of 7191799057 in words is "seven billion, one hundred ninety-one million, seven hundred ninety-nine thousand, fifty-seven".