1163966449 has 2 divisors, whose sum is σ = 1163966450. Its totient is φ = 1163966448.

The previous prime is 1163966413. The next prime is 1163966459. The reversal of 1163966449 is 9446693611.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 832726449 + 331240000 = 28857^2 + 18200^2 .

It is a cyclic number.

It is not a de Polignac number, because 1163966449 - 2²¹ = 1161869297 is a prime.

It is not a weakly prime, because it can be changed into another prime (1163966459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 581983224 + 581983225.

It is an arithmetic number, because the mean of its divisors is an integer number (581983225).

Almost surely, 2^1163966449 is an apocalyptic number.

It is an amenable number.

1163966449 is a deficient number, since it is larger than the sum of its proper divisors (1).

1163966449 is an equidigital number, since it uses as much as digits as its factorization.

1163966449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 839808, while the sum is 49.

The square root of 1163966449 is about 34116.9525163078. The cubic root of 1163966449 is about 1051.9138033753.

The spelling of 1163966449 in words is "one billion, one hundred sixty-three million, nine hundred sixty-six thousand, four hundred forty-nine".