186946349 has 2 divisors, whose sum is σ = 186946350. Its totient is φ = 186946348.

The previous prime is 186946343. The next prime is 186946373. The reversal of 186946349 is 943649681.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 157678249 + 29268100 = 12557^2 + 5410^2 .

It is a cyclic number.

It is not a de Polignac number, because 186946349 - 2²⁰ = 185897773 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 186946297 and 186946306.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (186946343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 93473174 + 93473175.

It is an arithmetic number, because the mean of its divisors is an integer number (93473175).

Almost surely, 2^186946349 is an apocalyptic number.

It is an amenable number.

186946349 is a deficient number, since it is larger than the sum of its proper divisors (1).

186946349 is an equidigital number, since it uses as much as digits as its factorization.

186946349 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1119744, while the sum is 50.

The square root of 186946349 is about 13672.8325156128. The cubic root of 186946349 is about 571.7932128212.

The spelling of 186946349 in words is "one hundred eighty-six million, nine hundred forty-six thousand, three hundred forty-nine".