11818938 has 16 divisors (see below), whose sum is σ = 23770656. Its totient is φ = 3917520.

The previous prime is 11818913. The next prime is 11818943. The reversal of 11818938 is 83981811.

It is a junction number, because it is equal to n+sod(n) for n = 11818896 and 11818905.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4356 + ... + 6527.

It is an arithmetic number, because the mean of its divisors is an integer number (1485666).

Almost surely, 2^11818938 is an apocalyptic number.

11818938 is an abundant number, since it is smaller than the sum of its proper divisors (11951718).

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

11818938 is a wasteful number, since it uses less digits than its factorization.

11818938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11069.

The product of its digits is 13824, while the sum is 39.

The square root of 11818938 is about 3437.8682348223. The cubic root of 11818938 is about 227.7855401061.

The spelling of 11818938 in words is "eleven million, eight hundred eighteen thousand, nine hundred thirty-eight".