11438018 has 4 divisors (see below), whose sum is σ = 17157030. Its totient is φ = 5719008.

The previous prime is 11437999. The next prime is 11438027. The reversal of 11438018 is 81083411.

11438018 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 9966649 + 1471369 = 3157^2 + 1213^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2859503 + ... + 2859506.

Almost surely, 2^11438018 is an apocalyptic number.

11438018 is a deficient number, since it is larger than the sum of its proper divisors (5719012).

11438018 is an equidigital number, since it uses as much as digits as its factorization.

11438018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5719011.

The product of its (nonzero) digits is 768, while the sum is 26.

The square root of 11438018 is about 3382.0138970738. The cubic root of 11438018 is about 225.3116208864.

The spelling of 11438018 in words is "eleven million, four hundred thirty-eight thousand, eighteen".