11918307241 has 3 divisors (see below), whose sum is σ = 11918416413. Its totient is φ = 11918198070.

The previous prime is 11918307227. The next prime is 11918307299. The reversal of 11918307241 is 14270381911.

The square root of 11918307241 is 109171.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 11918307241 - 2¹¹ = 11918305193 is a prime.

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 11918307241.

It is not an unprimeable number, because it can be changed into a prime (11918302241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 54586 + ... + 163756.

It is an arithmetic number, because the mean of its divisors is an integer number (3972805471).

Almost surely, 2^11918307241 is an apocalyptic number.

11918307241 is the 109171-st square number.

11918307241 is the 54586-th centered octagonal number.

It is an amenable number.

11918307241 is a deficient number, since it is larger than the sum of its proper divisors (109172).

11918307241 is an frugal number, since it uses more digits than its factorization.

11918307241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218342 (or 109171 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 37.

The spelling of 11918307241 in words is "eleven billion, nine hundred eighteen million, three hundred seven thousand, two hundred forty-one".