188113873 has 4 divisors (see below), whose sum is σ = 188361828. Its totient is φ = 187865920.

The previous prime is 188113867. The next prime is 188113879. The reversal of 188113873 is 378311881.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 378311881 = 911 ⋅415271.

It is an interprime number because it is at equal distance from previous prime (188113867) and next prime (188113879).

It can be written as a sum of positive squares in 2 ways, for example, as 14085009 + 174028864 = 3753^2 + 13192^2 .

It is a cyclic number.

It is not a de Polignac number, because 188113873 - 2¹⁷ = 187982801 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (188113879) 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, 122836 + ... + 124357.

It is an arithmetic number, because the mean of its divisors is an integer number (47090457).

Almost surely, 2^188113873 is an apocalyptic number.

It is an amenable number.

188113873 is a deficient number, since it is larger than the sum of its proper divisors (247955).

188113873 is an equidigital number, since it uses as much as digits as its factorization.

188113873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247954.

The product of its digits is 32256, while the sum is 40.

The square root of 188113873 is about 13715.4610932334. The cubic root of 188113873 is about 572.9810712061.

The spelling of 188113873 in words is "one hundred eighty-eight million, one hundred thirteen thousand, eight hundred seventy-three".