1155105169 has 2 divisors, whose sum is σ = 1155105170. Its totient is φ = 1155105168.

The previous prime is 1155105131. The next prime is 1155105179. The reversal of 1155105169 is 9615015511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1057095169 + 98010000 = 32513^2 + 9900^2 .

It is a cyclic number.

It is not a de Polignac number, because 1155105169 - 2²⁵ = 1121550737 is a prime.

It is a super-2 number, since 2×1155105169² = 2668535902901037122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1155105179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 577552584 + 577552585.

It is an arithmetic number, because the mean of its divisors is an integer number (577552585).

Almost surely, 2^1155105169 is an apocalyptic number.

It is an amenable number.

1155105169 is a deficient number, since it is larger than the sum of its proper divisors (1).

1155105169 is an equidigital number, since it uses as much as digits as its factorization.

1155105169 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6750, while the sum is 34.

The square root of 1155105169 is about 33986.8381730340. The cubic root of 1155105169 is about 1049.2375928827.

The spelling of 1155105169 in words is "one billion, one hundred fifty-five million, one hundred five thousand, one hundred sixty-nine".