186106397 has 2 divisors, whose sum is σ = 186106398. Its totient is φ = 186106396.

The previous prime is 186106381. The next prime is 186106433. The reversal of 186106397 is 793601681.

186106397 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 157226521 + 28879876 = 12539^2 + 5374^2 .

It is a cyclic number.

It is not a de Polignac number, because 186106397 - 2⁴ = 186106381 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (186106997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 93053198 + 93053199.

It is an arithmetic number, because the mean of its divisors is an integer number (93053199).

Almost surely, 2^186106397 is an apocalyptic number.

It is an amenable number.

186106397 is a deficient number, since it is larger than the sum of its proper divisors (1).

186106397 is an equidigital number, since it uses as much as digits as its factorization.

186106397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 186106397 is about 13642.0818425928. The cubic root of 186106397 is about 570.9355693395.

The spelling of 186106397 in words is "one hundred eighty-six million, one hundred six thousand, three hundred ninety-seven".