11889945923 has 4 divisors (see below), whose sum is σ = 11896242120. Its totient is φ = 11883649728.

The previous prime is 11889945919. The next prime is 11889945943. The reversal of 11889945923 is 32954998811.

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 11889945923 - 2² = 11889945919 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11889945943) 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, 3145265 + ... + 3149042.

It is an arithmetic number, because the mean of its divisors is an integer number (2974060530).

Almost surely, 2^11889945923 is an apocalyptic number.

11889945923 is a deficient number, since it is larger than the sum of its proper divisors (6296197).

11889945923 is an equidigital number, since it uses as much as digits as its factorization.

11889945923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6296196.

The product of its digits is 5598720, while the sum is 59.

The spelling of 11889945923 in words is "eleven billion, eight hundred eighty-nine million, nine hundred forty-five thousand, nine hundred twenty-three".