1168597091 has 2 divisors, whose sum is σ = 1168597092. Its totient is φ = 1168597090.

The previous prime is 1168597061. The next prime is 1168597097. The reversal of 1168597091 is 1907958611.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1168597091 is a prime.

It is a super-2 number, since 2×1168597091² = 2731238322187324562, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1168597097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 584298545 + 584298546.

It is an arithmetic number, because the mean of its divisors is an integer number (584298546).

Almost surely, 2^1168597091 is an apocalyptic number.

1168597091 is a deficient number, since it is larger than the sum of its proper divisors (1).

1168597091 is an equidigital number, since it uses as much as digits as its factorization.

1168597091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 136080, while the sum is 47.

The square root of 1168597091 is about 34184.7493920900. The cubic root of 1168597091 is about 1053.3069108120.

The spelling of 1168597091 in words is "one billion, one hundred sixty-eight million, five hundred ninety-seven thousand, ninety-one".