113686919 has 2 divisors, whose sum is σ = 113686920. Its totient is φ = 113686918.

The previous prime is 113686897. The next prime is 113686949. The reversal of 113686919 is 919686311.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (919686311) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 113686919 - 2¹² = 113682823 is a prime.

It is a super-2 number, since 2×113686919² = 25849431103425122, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 113686919.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (113686949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56843459 + 56843460.

It is an arithmetic number, because the mean of its divisors is an integer number (56843460).

Almost surely, 2^113686919 is an apocalyptic number.

113686919 is a deficient number, since it is larger than the sum of its proper divisors (1).

113686919 is an equidigital number, since it uses as much as digits as its factorization.

113686919 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 69984, while the sum is 44.

The square root of 113686919 is about 10662.4068108472. The cubic root of 113686919 is about 484.4364716378.

The spelling of 113686919 in words is "one hundred thirteen million, six hundred eighty-six thousand, nine hundred nineteen".