188694113 has 4 divisors (see below), whose sum is σ = 188754480. Its totient is φ = 188633748.

The previous prime is 188694091. The next prime is 188694119. The reversal of 188694113 is 311496881.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 311496881 = 223 ⋅1396847.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-188694113 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (188694119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25223 + ... + 31836.

It is an arithmetic number, because the mean of its divisors is an integer number (47188620).

Almost surely, 2^188694113 is an apocalyptic number.

It is an amenable number.

188694113 is a deficient number, since it is larger than the sum of its proper divisors (60367).

188694113 is an equidigital number, since it uses as much as digits as its factorization.

188694113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60366.

The product of its digits is 41472, while the sum is 41.

The square root of 188694113 is about 13736.5975772751. The cubic root of 188694113 is about 573.5695893616.

The spelling of 188694113 in words is "one hundred eighty-eight million, six hundred ninety-four thousand, one hundred thirteen".