1115616165 has 8 divisors (see below), whose sum is σ = 1784985888. Its totient is φ = 594995280.

The previous prime is 1115616163. The next prime is 1115616169. The reversal of 1115616165 is 5616165111.

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

It is not a de Polignac number, because 1115616165 - 2¹ = 1115616163 is a prime.

It is a super-3 number, since 3×1115616165³ (a number of 28 digits) contains 333 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1115616163) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37187191 + ... + 37187220.

It is an arithmetic number, because the mean of its divisors is an integer number (223123236).

Almost surely, 2^1115616165 is an apocalyptic number.

1115616165 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1115616165 is a deficient number, since it is larger than the sum of its proper divisors (669369723).

1115616165 is an equidigital number, since it uses as much as digits as its factorization.

1115616165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74374419.

The product of its digits is 5400, while the sum is 33.

The square root of 1115616165 is about 33400.8407828306. The cubic root of 1115616165 is about 1037.1421060037.

It can be divided in two parts, 111 and 5616165, that added together give a triangular number (5616276 = T₃₃₅₁).

The spelling of 1115616165 in words is "one billion, one hundred fifteen million, six hundred sixteen thousand, one hundred sixty-five".