186145613 has 2 divisors, whose sum is σ = 186145614. Its totient is φ = 186145612.

The previous prime is 186145591. The next prime is 186145621. The reversal of 186145613 is 316541681.

186145613 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 168948004 + 17197609 = 12998^2 + 4147^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-186145613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (186145633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 93072806 + 93072807.

It is an arithmetic number, because the mean of its divisors is an integer number (93072807).

Almost surely, 2^186145613 is an apocalyptic number.

It is an amenable number.

186145613 is a deficient number, since it is larger than the sum of its proper divisors (1).

186145613 is an equidigital number, since it uses as much as digits as its factorization.

186145613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17280, while the sum is 35.

The square root of 186145613 is about 13643.5190841659. The cubic root of 186145613 is about 570.9756686898.

It can be divided in two parts, 1861 and 45613, that added together give a palindrome (47474).

The spelling of 186145613 in words is "one hundred eighty-six million, one hundred forty-five thousand, six hundred thirteen".