1115806613 has 16 divisors (see below), whose sum is σ = 1197267456. Its totient is φ = 1037337840.

The previous prime is 1115806609. The next prime is 1115806619. The reversal of 1115806613 is 3166085111.

It is a cyclic number.

It is not a de Polignac number, because 1115806613 - 2² = 1115806609 is a prime.

It is a super-2 number, since 2×1115806613² = 2490048795229063538, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1115806613.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1115806619) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 206006 + ... + 211352.

It is an arithmetic number, because the mean of its divisors is an integer number (74829216).

Almost surely, 2^1115806613 is an apocalyptic number.

It is an amenable number.

1115806613 is a deficient number, since it is larger than the sum of its proper divisors (81460843).

1115806613 is a wasteful number, since it uses less digits than its factorization.

1115806613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5624.

The product of its (nonzero) digits is 4320, while the sum is 32.

The square root of 1115806613 is about 33403.6916073658. The cubic root of 1115806613 is about 1037.2011198495.

The spelling of 1115806613 in words is "one billion, one hundred fifteen million, eight hundred six thousand, six hundred thirteen".