11844138241 has 4 divisors (see below), whose sum is σ = 12755225812. Its totient is φ = 10933050672.

The previous prime is 11844138209. The next prime is 11844138253. The reversal of 11844138241 is 14283144811.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2547321841 + 9296816400 = 50471^2 + 96420^2 .

It is a cyclic number.

It is not a de Polignac number, because 11844138241 - 2⁵ = 11844138209 is a prime.

It is a super-2 number, since 2×11844138241² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11844138241.

It is not an unprimeable number, because it can be changed into a prime (11844138841) 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, 455543766 + ... + 455543791.

It is an arithmetic number, because the mean of its divisors is an integer number (3188806453).

Almost surely, 2^11844138241 is an apocalyptic number.

It is an amenable number.

11844138241 is a deficient number, since it is larger than the sum of its proper divisors (911087571).

11844138241 is an equidigital number, since it uses as much as digits as its factorization.

11844138241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 911087570.

The product of its digits is 24576, while the sum is 37.

The spelling of 11844138241 in words is "eleven billion, eight hundred forty-four million, one hundred thirty-eight thousand, two hundred forty-one".