11381785 has 4 divisors (see below), whose sum is σ = 13658148. Its totient is φ = 9105424.

The previous prime is 11381761. The next prime is 11381813. The reversal of 11381785 is 58718311.

11381785 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.

It can be written as a sum of positive squares in 2 ways, for example, as 1320201 + 10061584 = 1149^2 + 3172^2 .

It is a cyclic number.

It is not a de Polignac number, because 11381785 - 2⁵ = 11381753 is a prime.

It is a Duffinian number.

It is a plaindrome in base 9.

It is a self number, because there is not a number n which added to its sum of digits gives 11381785.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1138174 + ... + 1138183.

It is an arithmetic number, because the mean of its divisors is an integer number (3414537).

Almost surely, 2^11381785 is an apocalyptic number.

It is an amenable number.

11381785 is a deficient number, since it is larger than the sum of its proper divisors (2276363).

11381785 is an equidigital number, since it uses as much as digits as its factorization.

11381785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2276362.

The product of its digits is 6720, while the sum is 34.

The square root of 11381785 is about 3373.6901161784. The cubic root of 11381785 is about 224.9417791748.

The spelling of 11381785 in words is "eleven million, three hundred eighty-one thousand, seven hundred eighty-five".