11838538 has 4 divisors (see below), whose sum is σ = 17757810. Its totient is φ = 5919268.

The previous prime is 11838529. The next prime is 11838553. The reversal of 11838538 is 83583811.

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., 9715689 + 2122849 = 3117^2 + 1457^2 .

It is a junction number, because it is equal to n+sod(n) for n = 11838497 and 11838506.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2959633 + ... + 2959636.

Almost surely, 2^11838538 is an apocalyptic number.

11838538 is a deficient number, since it is larger than the sum of its proper divisors (5919272).

11838538 is an equidigital number, since it uses as much as digits as its factorization.

11838538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5919271.

The product of its digits is 23040, while the sum is 37.

The square root of 11838538 is about 3440.7176576988. The cubic root of 11838538 is about 227.9113870277.

The spelling of 11838538 in words is "eleven million, eight hundred thirty-eight thousand, five hundred thirty-eight".