113781859 has 2 divisors, whose sum is σ = 113781860. Its totient is φ = 113781858.

The previous prime is 113781841. The next prime is 113781893. The reversal of 113781859 is 958187311.

It is a weak prime.

It is an emirp because it is prime and its reverse (958187311) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 113781859 - 2¹⁷ = 113650787 is a prime.

It is a super-2 number, since 2×113781859² = 25892622874991762, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (113781809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56890929 + 56890930.

It is an arithmetic number, because the mean of its divisors is an integer number (56890930).

Almost surely, 2^113781859 is an apocalyptic number.

113781859 is a deficient number, since it is larger than the sum of its proper divisors (1).

113781859 is an equidigital number, since it uses as much as digits as its factorization.

113781859 is an evil number, because the sum of its binary digits is even.

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

The square root of 113781859 is about 10666.8579722428. The cubic root of 113781859 is about 484.5712851596.

The spelling of 113781859 in words is "one hundred thirteen million, seven hundred eighty-one thousand, eight hundred fifty-nine".