11618899 has 8 divisors (see below), whose sum is σ = 12399440. Its totient is φ = 10855296.

The previous prime is 11618897. The next prime is 11618903. The reversal of 11618899 is 99881611.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 11618899 - 2¹ = 11618897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11618891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2802 + ... + 5575.

It is an arithmetic number, because the mean of its divisors is an integer number (1549930).

Almost surely, 2^11618899 is an apocalyptic number.

11618899 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

11618899 is a deficient number, since it is larger than the sum of its proper divisors (780541).

11618899 is an equidigital number, since it uses as much as digits as its factorization.

11618899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8469.

The product of its digits is 31104, while the sum is 43.

The square root of 11618899 is about 3408.6506127792. The cubic root of 11618899 is about 226.4931084421.

The spelling of 11618899 in words is "eleven million, six hundred eighteen thousand, eight hundred ninety-nine".