11218877939 has 4 divisors (see below), whose sum is σ = 11228609256. Its totient is φ = 11209146624.

The previous prime is 11218877909. The next prime is 11218877947. The reversal of 11218877939 is 93977881211.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11218877939 - 2¹⁶ = 11218812403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11218877909) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4863929 + ... + 4866234.

It is an arithmetic number, because the mean of its divisors is an integer number (2807152314).

Almost surely, 2^11218877939 is an apocalyptic number.

11218877939 is a deficient number, since it is larger than the sum of its proper divisors (9731317).

11218877939 is an equidigital number, since it uses as much as digits as its factorization.

11218877939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9731316.

The product of its digits is 1524096, while the sum is 56.

The spelling of 11218877939 in words is "eleven billion, two hundred eighteen million, eight hundred seventy-seven thousand, nine hundred thirty-nine".