186772849 has 2 divisors, whose sum is σ = 186772850. Its totient is φ = 186772848.

The previous prime is 186772837. The next prime is 186772919. The reversal of 186772849 is 948277681.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 94478400 + 92294449 = 9720^2 + 9607^2 .

It is a cyclic number.

It is not a de Polignac number, because 186772849 - 2⁷ = 186772721 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 186772796 and 186772805.

It is not a weakly prime, because it can be changed into another prime (186772249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 93386424 + 93386425.

It is an arithmetic number, because the mean of its divisors is an integer number (93386425).

Almost surely, 2^186772849 is an apocalyptic number.

It is an amenable number.

186772849 is a deficient number, since it is larger than the sum of its proper divisors (1).

186772849 is an equidigital number, since it uses as much as digits as its factorization.

186772849 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1354752, while the sum is 52.

The square root of 186772849 is about 13666.4863443388. The cubic root of 186772849 is about 571.6162693131.

The spelling of 186772849 in words is "one hundred eighty-six million, seven hundred seventy-two thousand, eight hundred forty-nine".