186426113 has 4 divisors (see below), whose sum is σ = 190761648. Its totient is φ = 182090580.

The previous prime is 186426101. The next prime is 186426127. The reversal of 186426113 is 311624681.

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: 311624681 = 19 ⋅16401299.

It is a cyclic number.

It is not a de Polignac number, because 186426113 - 2²⁶ = 119317249 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 186426113.

It is not an unprimeable number, because it can be changed into a prime (186422113) 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, 2167703 + ... + 2167788.

It is an arithmetic number, because the mean of its divisors is an integer number (47690412).

Almost surely, 2^186426113 is an apocalyptic number.

It is an amenable number.

186426113 is a deficient number, since it is larger than the sum of its proper divisors (4335535).

186426113 is an equidigital number, since it uses as much as digits as its factorization.

186426113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4335534.

The product of its digits is 6912, while the sum is 32.

The square root of 186426113 is about 13653.7948204886. The cubic root of 186426113 is about 571.2623229438.

The spelling of 186426113 in words is "one hundred eighty-six million, four hundred twenty-six thousand, one hundred thirteen".