11941917789 has 8 divisors (see below), whose sum is σ = 15930002592. Its totient is φ = 7957555760.

The previous prime is 11941917781. The next prime is 11941917803. The reversal of 11941917789 is 98771914911.

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

It is a cyclic number.

It is not a de Polignac number, because 11941917789 - 2³ = 11941917781 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11941917781) 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 7 ways as a sum of consecutive naturals, for example, 923199 + ... + 936044.

It is an arithmetic number, because the mean of its divisors is an integer number (1991250324).

Almost surely, 2^11941917789 is an apocalyptic number.

It is an amenable number.

11941917789 is a deficient number, since it is larger than the sum of its proper divisors (3988084803).

11941917789 is a wasteful number, since it uses less digits than its factorization.

11941917789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1861387.

The product of its digits is 1143072, while the sum is 57.

The spelling of 11941917789 in words is "eleven billion, nine hundred forty-one million, nine hundred seventeen thousand, seven hundred eighty-nine".