186828461 has 4 divisors (see below), whose sum is σ = 186856512. Its totient is φ = 186800412.

The previous prime is 186828391. The next prime is 186828479. The reversal of 186828461 is 164828681.

186828461 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 164828681 = 79 ⋅2086439.

It is a cyclic number.

It is not a de Polignac number, because 186828461 - 2¹⁴ = 186812077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (186228461) 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, 2300 + ... + 19466.

It is an arithmetic number, because the mean of its divisors is an integer number (46714128).

Almost surely, 2^186828461 is an apocalyptic number.

It is an amenable number.

186828461 is a deficient number, since it is larger than the sum of its proper divisors (28051).

186828461 is a wasteful number, since it uses less digits than its factorization.

186828461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28050.

The product of its digits is 147456, while the sum is 44.

The square root of 186828461 is about 13668.5208051201. The cubic root of 186828461 is about 571.6729969899.

The spelling of 186828461 in words is "one hundred eighty-six million, eight hundred twenty-eight thousand, four hundred sixty-one".