11218933738 has 4 divisors (see below), whose sum is σ = 16828400610. Its totient is φ = 5609466868.

The previous prime is 11218933729. The next prime is 11218933751. The reversal of 11218933738 is 83733981211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 83733981211 = 268171 ⋅312241.

It can be written as a sum of positive squares in only one way, i.e., 8663327929 + 2555605809 = 93077^2 + 50553^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2804733433 + ... + 2804733436.

Almost surely, 2^11218933738 is an apocalyptic number.

11218933738 is a deficient number, since it is larger than the sum of its proper divisors (5609466872).

11218933738 is an equidigital number, since it uses as much as digits as its factorization.

11218933738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5609466871.

The product of its digits is 217728, while the sum is 46.

The spelling of 11218933738 in words is "eleven billion, two hundred eighteen million, nine hundred thirty-three thousand, seven hundred thirty-eight".