11922812849 has 8 divisors (see below), whose sum is σ = 12186109800. Its totient is φ = 11660935936.

The previous prime is 11922812809. The next prime is 11922812857. The reversal of 11922812849 is 94821822911.

It can be written as a sum of positive squares in 4 ways, for example, as 1768623025 + 10154189824 = 42055^2 + 100768^2 .

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 11922812849 - 2⁸ = 11922812593 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11922812809) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 338024 + ... + 371625.

It is an arithmetic number, because the mean of its divisors is an integer number (1523263725).

Almost surely, 2^11922812849 is an apocalyptic number.

It is an amenable number.

11922812849 is a deficient number, since it is larger than the sum of its proper divisors (263296951).

11922812849 is an equidigital number, since it uses as much as digits as its factorization.

11922812849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 710019.

The product of its digits is 165888, while the sum is 47.

The spelling of 11922812849 in words is "eleven billion, nine hundred twenty-two million, eight hundred twelve thousand, eight hundred forty-nine".