11943938923 has 4 divisors (see below), whose sum is σ = 13650215920. Its totient is φ = 10237661928.

The previous prime is 11943938899. The next prime is 11943938947. The reversal of 11943938923 is 32983934911.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (11943938899) and next prime (11943938947).

It is a cyclic number.

It is not a de Polignac number, because 11943938923 - 2²¹ = 11941841771 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11943938423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 853138488 + ... + 853138501.

It is an arithmetic number, because the mean of its divisors is an integer number (3412553980).

Almost surely, 2^11943938923 is an apocalyptic number.

11943938923 is a deficient number, since it is larger than the sum of its proper divisors (1706276997).

11943938923 is an equidigital number, since it uses as much as digits as its factorization.

11943938923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1706276996.

The product of its digits is 1259712, while the sum is 52.

The spelling of 11943938923 in words is "eleven billion, nine hundred forty-three million, nine hundred thirty-eight thousand, nine hundred twenty-three".