113781589 has 4 divisors (see below), whose sum is σ = 114270156. Its totient is φ = 113293024.

The previous prime is 113781571. The next prime is 113781593. The reversal of 113781589 is 985187311.

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 14938225 + 98843364 = 3865^2 + 9942^2 .

It is a cyclic number.

It is not a de Polignac number, because 113781589 - 2⁷ = 113781461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113781599) 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 3 ways as a sum of consecutive naturals, for example, 243934 + ... + 244399.

It is an arithmetic number, because the mean of its divisors is an integer number (28567539).

Almost surely, 2^113781589 is an apocalyptic number.

It is an amenable number.

113781589 is a deficient number, since it is larger than the sum of its proper divisors (488567).

113781589 is an equidigital number, since it uses as much as digits as its factorization.

113781589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 488566.

The product of its digits is 60480, while the sum is 43.

The square root of 113781589 is about 10666.8453162123. The cubic root of 113781589 is about 484.5709018696.

The spelling of 113781589 in words is "one hundred thirteen million, seven hundred eighty-one thousand, five hundred eighty-nine".