11243618 has 4 divisors (see below), whose sum is σ = 16865430. Its totient is φ = 5621808.

The previous prime is 11243593. The next prime is 11243621. The reversal of 11243618 is 81634211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 81634211 = 773 ⋅105607.

It can be written as a sum of positive squares in only one way, i.e., 11202409 + 41209 = 3347^2 + 203^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2810903 + ... + 2810906.

Almost surely, 2^11243618 is an apocalyptic number.

11243618 is a deficient number, since it is larger than the sum of its proper divisors (5621812).

11243618 is an equidigital number, since it uses as much as digits as its factorization.

11243618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5621811.

The product of its digits is 1152, while the sum is 26.

The square root of 11243618 is about 3353.1504588968. The cubic root of 11243618 is about 224.0278584612.

Adding to 11243618 its reverse (81634211), we get a palindrome (92877829).

The spelling of 11243618 in words is "eleven million, two hundred forty-three thousand, six hundred eighteen".