113509918 has 8 divisors (see below), whose sum is σ = 180280512. Its totient is φ = 53416416.

The previous prime is 113509897. The next prime is 113509919. The reversal of 113509918 is 819905311.

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 (113509919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1669230 + ... + 1669297.

It is an arithmetic number, because the mean of its divisors is an integer number (22535064).

Almost surely, 2^113509918 is an apocalyptic number.

113509918 is a deficient number, since it is larger than the sum of its proper divisors (66770594).

113509918 is a wasteful number, since it uses less digits than its factorization.

113509918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3338546.

The product of its (nonzero) digits is 9720, while the sum is 37.

The square root of 113509918 is about 10654.1033409668. The cubic root of 113509918 is about 484.1849320622.

The spelling of 113509918 in words is "one hundred thirteen million, five hundred nine thousand, nine hundred eighteen".