11381589 has 24 divisors (see below), whose sum is σ = 17503200. Its totient is φ = 7106400.

The previous prime is 11381581. The next prime is 11381597. The reversal of 11381589 is 98518311.

It is an interprime number because it is at equal distance from previous prime (11381581) and next prime (11381597).

It is not a de Polignac number, because 11381589 - 2³ = 11381581 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11381581) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16942 + ... + 17600.

It is an arithmetic number, because the mean of its divisors is an integer number (729300).

Almost surely, 2^11381589 is an apocalyptic number.

11381589 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

11381589 is a deficient number, since it is larger than the sum of its proper divisors (6121611).

11381589 is a wasteful number, since it uses less digits than its factorization.

11381589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 785 (or 782 counting only the distinct ones).

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

The square root of 11381589 is about 3373.6610677423. The cubic root of 11381589 is about 224.9404879643.

The spelling of 11381589 in words is "eleven million, three hundred eighty-one thousand, five hundred eighty-nine".