11892838138 has 8 divisors (see below), whose sum is σ = 18888625332. Its totient is φ = 5596629696.

The previous prime is 11892838127. The next prime is 11892838213. The reversal of 11892838138 is 83183829811.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 11795480449 + 97357689 = 108607^2 + 9867^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 174894645 + ... + 174894712.

Almost surely, 2^11892838138 is an apocalyptic number.

11892838138 is a deficient number, since it is larger than the sum of its proper divisors (6995787194).

11892838138 is a wasteful number, since it uses less digits than its factorization.

11892838138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349789376.

The product of its digits is 663552, while the sum is 52.

The spelling of 11892838138 in words is "eleven billion, eight hundred ninety-two million, eight hundred thirty-eight thousand, one hundred thirty-eight".