113809918 has 8 divisors (see below), whose sum is σ = 172018440. Its totient is φ = 56470440.

The previous prime is 113809903. The next prime is 113809919. The reversal of 113809918 is 819908311.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113809919) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 216933 + ... + 217456.

It is an arithmetic number, because the mean of its divisors is an integer number (21502305).

Almost surely, 2^113809918 is an apocalyptic number.

113809918 is a deficient number, since it is larger than the sum of its proper divisors (58208522).

113809918 is a wasteful number, since it uses less digits than its factorization.

113809918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434522.

The product of its (nonzero) digits is 15552, while the sum is 40.

The square root of 113809918 is about 10668.1731332033. The cubic root of 113809918 is about 484.6111142042.

The spelling of 113809918 in words is "one hundred thirteen million, eight hundred nine thousand, nine hundred eighteen".