1163655165 has 32 divisors (see below), whose sum is σ = 1892701440. Its totient is φ = 610412544.

The previous prime is 1163655161. The next prime is 1163655179. The reversal of 1163655165 is 5615563611.

It is not a de Polignac number, because 1163655165 - 2² = 1163655161 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1163655161) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 240591 + ... + 245379.

It is an arithmetic number, because the mean of its divisors is an integer number (59146920).

Almost surely, 2^1163655165 is an apocalyptic number.

1163655165 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1163655165 is a deficient number, since it is larger than the sum of its proper divisors (729046275).

1163655165 is a wasteful number, since it uses less digits than its factorization.

1163655165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5061.

The product of its digits is 81000, while the sum is 39.

The square root of 1163655165 is about 34112.3901976980. The cubic root of 1163655165 is about 1051.8200225706.

The spelling of 1163655165 in words is "one billion, one hundred sixty-three million, six hundred fifty-five thousand, one hundred sixty-five".