11618955 has 24 divisors (see below), whose sum is σ = 20791680. Its totient is φ = 5996160.

The previous prime is 11618953. The next prime is 11618983. The reversal of 11618955 is 55981611.

It is not a de Polignac number, because 11618955 - 2¹ = 11618953 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11618953) 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 23 ways as a sum of consecutive naturals, for example, 2770 + ... + 5559.

It is an arithmetic number, because the mean of its divisors is an integer number (866320).

Almost surely, 2^11618955 is an apocalyptic number.

11618955 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11618955 is a deficient number, since it is larger than the sum of its proper divisors (9172725).

11618955 is a wasteful number, since it uses less digits than its factorization.

11618955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8371 (or 8368 counting only the distinct ones).

The product of its digits is 10800, while the sum is 36.

The square root of 11618955 is about 3408.6588271636. The cubic root of 11618955 is about 226.4934723204.

The spelling of 11618955 in words is "eleven million, six hundred eighteen thousand, nine hundred fifty-five".