11538761 has 8 divisors (see below), whose sum is σ = 12567240. Its totient is φ = 10530432.

The previous prime is 11538739. The next prime is 11538763. The reversal of 11538761 is 16783511.

11538761 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 383161 + 11155600 = 619^2 + 3340^2 .

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 11538761 - 2⁶ = 11538697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11538763) 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, 3830 + ... + 6143.

It is an arithmetic number, because the mean of its divisors is an integer number (1570905).

Almost surely, 2^11538761 is an apocalyptic number.

It is an amenable number.

11538761 is a deficient number, since it is larger than the sum of its proper divisors (1028479).

11538761 is an equidigital number, since it uses as much as digits as its factorization.

11538761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10075.

The product of its digits is 5040, while the sum is 32.

The square root of 11538761 is about 3396.8751816927. The cubic root of 11538761 is about 225.9711830540.

The spelling of 11538761 in words is "eleven million, five hundred thirty-eight thousand, seven hundred sixty-one".