11618838 has 96 divisors (see below), whose sum is σ = 32078592. Its totient is φ = 2952000.

The previous prime is 11618807. The next prime is 11618839. The reversal of 11618838 is 83881611.

11618838 is a `hidden beast` number, since 1 + 1 + 618 + 8 + 38 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11618839) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 114988 + ... + 115088.

It is an arithmetic number, because the mean of its divisors is an integer number (334152).

Almost surely, 2^11618838 is an apocalyptic number.

11618838 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 11618838, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16039296).

11618838 is an abundant number, since it is smaller than the sum of its proper divisors (20459754).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11618838 is a wasteful number, since it uses less digits than its factorization.

11618838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210 (or 207 counting only the distinct ones).

The product of its digits is 9216, while the sum is 36.

The square root of 11618838 is about 3408.6416649451. The cubic root of 11618838 is about 226.4927120734.

It can be divided in two parts, 116188 and 38, that multiplied together give a palindrome (4415144).

The spelling of 11618838 in words is "eleven million, six hundred eighteen thousand, eight hundred thirty-eight".