11942381449 has 4 divisors (see below), whose sum is σ = 11954433280. Its totient is φ = 11930329620.

The previous prime is 11942381447. The next prime is 11942381461. The reversal of 11942381449 is 94418324911.

11942381449 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 a cyclic number.

It is not a de Polignac number, because 11942381449 - 2¹ = 11942381447 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11942381399 and 11942381408.

It is not an unprimeable number, because it can be changed into a prime (11942381447) 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, 6024429 + ... + 6026410.

It is an arithmetic number, because the mean of its divisors is an integer number (2988608320).

Almost surely, 2^11942381449 is an apocalyptic number.

It is an amenable number.

11942381449 is a deficient number, since it is larger than the sum of its proper divisors (12051831).

11942381449 is an equidigital number, since it uses as much as digits as its factorization.

11942381449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12051830.

The product of its digits is 248832, while the sum is 46.

The spelling of 11942381449 in words is "eleven billion, nine hundred forty-two million, three hundred eighty-one thousand, four hundred forty-nine".