1169371997 has 2 divisors, whose sum is σ = 1169371998. Its totient is φ = 1169371996.

The previous prime is 1169371961. The next prime is 1169372093. The reversal of 1169371997 is 7991739611.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 675688036 + 493683961 = 25994^2 + 22219^2 .

It is a cyclic number.

It is not a de Polignac number, because 1169371997 - 2⁶ = 1169371933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1169371937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 584685998 + 584685999.

It is an arithmetic number, because the mean of its divisors is an integer number (584685999).

Almost surely, 2^1169371997 is an apocalyptic number.

It is an amenable number.

1169371997 is a deficient number, since it is larger than the sum of its proper divisors (1).

1169371997 is an equidigital number, since it uses as much as digits as its factorization.

1169371997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 642978, while the sum is 53.

The square root of 1169371997 is about 34196.0816030141. The cubic root of 1169371997 is about 1053.5396780919.

The spelling of 1169371997 in words is "one billion, one hundred sixty-nine million, three hundred seventy-one thousand, nine hundred ninety-seven".