1155115165 has 24 divisors (see below), whose sum is σ = 1474744320. Its totient is φ = 868389984.

The previous prime is 1155115141. The next prime is 1155115189. The reversal of 1155115165 is 5615115511.

It is an interprime number because it is at equal distance from previous prime (1155115141) and next prime (1155115189).

It is not a de Polignac number, because 1155115165 - 2¹¹ = 1155113117 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 226716 + ... + 231754.

It is an arithmetic number, because the mean of its divisors is an integer number (61447680).

Almost surely, 2^1155115165 is an apocalyptic number.

It is an amenable number.

1155115165 is a deficient number, since it is larger than the sum of its proper divisors (319629155).

1155115165 is a wasteful number, since it uses less digits than its factorization.

1155115165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5209 (or 5190 counting only the distinct ones).

The product of its digits is 3750, while the sum is 31.

The square root of 1155115165 is about 33986.9852296434. The cubic root of 1155115165 is about 1049.2406194899.

The spelling of 1155115165 in words is "one billion, one hundred fifty-five million, one hundred fifteen thousand, one hundred sixty-five".