11965938 has 16 divisors (see below), whose sum is σ = 24704256. Its totient is φ = 3859920.

The previous prime is 11965931. The next prime is 11965949. The reversal of 11965938 is 83956911.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 11965938.

It is not an unprimeable number, because it can be changed into a prime (11965931) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31981 + ... + 32352.

It is an arithmetic number, because the mean of its divisors is an integer number (1544016).

Almost surely, 2^11965938 is an apocalyptic number.

11965938 is an abundant number, since it is smaller than the sum of its proper divisors (12738318).

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

11965938 is a wasteful number, since it uses less digits than its factorization.

11965938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64369.

The product of its digits is 58320, while the sum is 42.

The square root of 11965938 is about 3459.1816951412. The cubic root of 11965938 is about 228.7260251382.

The spelling of 11965938 in words is "eleven million, nine hundred sixty-five thousand, nine hundred thirty-eight".