1165131663 has 8 divisors (see below), whose sum is σ = 1570964400. Its totient is φ = 768026688.

The previous prime is 1165131647. The next prime is 1165131691. The reversal of 1165131663 is 3661315611.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1165131663 - 2⁴ = 1165131647 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1165139663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2181628 + ... + 2182161.

It is an arithmetic number, because the mean of its divisors is an integer number (196370550).

Almost surely, 2^1165131663 is an apocalyptic number.

1165131663 is a deficient number, since it is larger than the sum of its proper divisors (405832737).

1165131663 is an equidigital number, since it uses as much as digits as its factorization.

1165131663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4363881.

The product of its digits is 9720, while the sum is 33.

The square root of 1165131663 is about 34134.0250043853. The cubic root of 1165131663 is about 1052.2647000622.

The spelling of 1165131663 in words is "one billion, one hundred sixty-five million, one hundred thirty-one thousand, six hundred sixty-three".