11381859 has 6 divisors (see below), whose sum is σ = 16440476. Its totient is φ = 7587900.

The previous prime is 11381837. The next prime is 11381861. The reversal of 11381859 is 95818311.

It is not a de Polignac number, because 11381859 - 2⁵ = 11381827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11381869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 632317 + ... + 632334.

Almost surely, 2^11381859 is an apocalyptic number.

11381859 is a deficient number, since it is larger than the sum of its proper divisors (5058617).

11381859 is a wasteful number, since it uses less digits than its factorization.

11381859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1264657 (or 1264654 counting only the distinct ones).

The product of its digits is 8640, while the sum is 36.

The square root of 11381859 is about 3373.7010833801. The cubic root of 11381859 is about 224.9422666688.

The spelling of 11381859 in words is "eleven million, three hundred eighty-one thousand, eight hundred fifty-nine".