113891138 has 8 divisors (see below), whose sum is σ = 172141200. Its totient is φ = 56510740.

The previous prime is 113891137. The next prime is 113891159. The reversal of 113891138 is 831198311.

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 113891098 and 113891107.

It is not an unprimeable number, because it can be changed into a prime (113891131) 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, 217088 + ... + 217611.

It is an arithmetic number, because the mean of its divisors is an integer number (21517650).

Almost surely, 2^113891138 is an apocalyptic number.

113891138 is a deficient number, since it is larger than the sum of its proper divisors (58250062).

113891138 is a wasteful number, since it uses less digits than its factorization.

113891138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434832.

The product of its digits is 5184, while the sum is 35.

The square root of 113891138 is about 10671.9791041774. The cubic root of 113891138 is about 484.7263670633.

The spelling of 113891138 in words is "one hundred thirteen million, eight hundred ninety-one thousand, one hundred thirty-eight".