1163966399 has 2 divisors, whose sum is σ = 1163966400. Its totient is φ = 1163966398.

The previous prime is 1163966389. The next prime is 1163966407. The reversal of 1163966399 is 9936693611.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1163966399 - 2⁴ = 1163966383 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1163966399.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1163966389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 581983199 + 581983200.

It is an arithmetic number, because the mean of its divisors is an integer number (581983200).

Almost surely, 2^1163966399 is an apocalyptic number.

1163966399 is a deficient number, since it is larger than the sum of its proper divisors (1).

1163966399 is an equidigital number, since it uses as much as digits as its factorization.

1163966399 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1417176, while the sum is 53.

The square root of 1163966399 is about 34116.9517835342. The cubic root of 1163966399 is about 1051.9137883131.

The spelling of 1163966399 in words is "one billion, one hundred sixty-three million, nine hundred sixty-six thousand, three hundred ninety-nine".