11922854637 has 4 divisors (see below), whose sum is σ = 15897139520. Its totient is φ = 7948569756.

The previous prime is 11922854549. The next prime is 11922854639. The reversal of 11922854637 is 73645822911.

11922854637 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 11922854637 - 2⁷ = 11922854509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11922854639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1987142437 + ... + 1987142442.

It is an arithmetic number, because the mean of its divisors is an integer number (3974284880).

Almost surely, 2^11922854637 is an apocalyptic number.

It is an amenable number.

11922854637 is a deficient number, since it is larger than the sum of its proper divisors (3974284883).

11922854637 is an equidigital number, since it uses as much as digits as its factorization.

11922854637 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3974284882.

The product of its digits is 725760, while the sum is 48.

The spelling of 11922854637 in words is "eleven billion, nine hundred twenty-two million, eight hundred fifty-four thousand, six hundred thirty-seven".