113858181 has 12 divisors (see below), whose sum is σ = 164555820. Its totient is φ = 75862080.

The previous prime is 113858159. The next prime is 113858183. The reversal of 113858181 is 181858311.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 50893956 + 62964225 = 7134^2 + 7935^2 .

It is not a de Polignac number, because 113858181 - 2⁶ = 113858117 is a prime.

It is a super-2 number, since 2×113858181² = 25927370761257522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113858183) 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 11 ways as a sum of consecutive naturals, for example, 24591 + ... + 28851.

It is an arithmetic number, because the mean of its divisors is an integer number (13712985).

Almost surely, 2^113858181 is an apocalyptic number.

It is an amenable number.

113858181 is a deficient number, since it is larger than the sum of its proper divisors (50697639).

113858181 is a wasteful number, since it uses less digits than its factorization.

113858181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7236 (or 7233 counting only the distinct ones).

The product of its digits is 7680, while the sum is 36.

The square root of 113858181 is about 10670.4349021022. The cubic root of 113858181 is about 484.6796070071.

It can be divided in two parts, 1138 and 58181, that added together give a cube (59319 = 39³).

The spelling of 113858181 in words is "one hundred thirteen million, eight hundred fifty-eight thousand, one hundred eighty-one".