11718749 has 4 divisors (see below), whose sum is σ = 13392864. Its totient is φ = 10044636.

The previous prime is 11718739. The next prime is 11718761. The reversal of 11718749 is 94781711.

It is a happy number.

11718749 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 de Polignac number, because none of the positive numbers 2^k-11718749 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11718709) 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, 837047 + ... + 837060.

It is an arithmetic number, because the mean of its divisors is an integer number (3348216).

Almost surely, 2^11718749 is an apocalyptic number.

It is an amenable number.

11718749 is a deficient number, since it is larger than the sum of its proper divisors (1674115).

11718749 is an equidigital number, since it uses as much as digits as its factorization.

11718749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1674114.

The product of its digits is 14112, while the sum is 38.

The square root of 11718749 is about 3423.2658383479. The cubic root of 11718749 is about 227.1400676431.

The spelling of 11718749 in words is "eleven million, seven hundred eighteen thousand, seven hundred forty-nine".