1165655001 has 8 divisors (see below), whose sum is σ = 1776236224. Its totient is φ = 666088560.

The previous prime is 1165654991. The next prime is 1165655009. The reversal of 1165655001 is 1005565611.

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

It is not a de Polignac number, because 1165655001 - 2⁶ = 1165654937 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1165655001.

It is not an unprimeable number, because it can be changed into a prime (1165655009) 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, 27753670 + ... + 27753711.

It is an arithmetic number, because the mean of its divisors is an integer number (222029528).

Almost surely, 2^1165655001 is an apocalyptic number.

It is an amenable number.

1165655001 is a deficient number, since it is larger than the sum of its proper divisors (610581223).

1165655001 is an equidigital number, since it uses as much as digits as its factorization.

1165655001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55507391.

The product of its (nonzero) digits is 4500, while the sum is 30.

The square root of 1165655001 is about 34141.6900724027. The cubic root of 1165655001 is about 1052.4222237971.

The spelling of 1165655001 in words is "one billion, one hundred sixty-five million, six hundred fifty-five thousand, one".