11389518 has 64 divisors (see below), whose sum is σ = 29952000. Its totient is φ = 3138912.

The previous prime is 11389517. The next prime is 11389529. The reversal of 11389518 is 81598311.

11389518 is a `hidden beast` number, since 1 + 138 + 9 + 518 = 666.

It is a super-2 number, since 2×11389518² = 259442240544648, which contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

Its product of digits (8640) is a multiple of the sum of its prime divisors (1080).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11389517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10443 + ... + 11481.

It is an arithmetic number, because the mean of its divisors is an integer number (468000).

Almost surely, 2^11389518 is an apocalyptic number.

11389518 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 11389518, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14976000).

11389518 is an abundant number, since it is smaller than the sum of its proper divisors (18562482).

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

11389518 is a wasteful number, since it uses less digits than its factorization.

11389518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1086 (or 1080 counting only the distinct ones).

The product of its digits is 8640, while the sum is 36.

The square root of 11389518 is about 3374.8359960152. The cubic root of 11389518 is about 224.9927108750.

The spelling of 11389518 in words is "eleven million, three hundred eighty-nine thousand, five hundred eighteen".