186484681 has 2 divisors, whose sum is σ = 186484682. Its totient is φ = 186484680.

The previous prime is 186484643. The next prime is 186484723.

186484681 is nontrivially palindromic in base 10.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 133194681 + 53290000 = 11541^2 + 7300^2 .

It is a palprime.

It is a cyclic number.

It is not a de Polignac number, because 186484681 - 2¹⁹ = 185960393 is a prime.

It is a super-2 number, since 2×186484681² = 69553072495343522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (186484631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 93242340 + 93242341.

It is an arithmetic number, because the mean of its divisors is an integer number (93242341).

Almost surely, 2^186484681 is an apocalyptic number.

It is an amenable number.

186484681 is a deficient number, since it is larger than the sum of its proper divisors (1).

186484681 is an equidigital number, since it uses as much as digits as its factorization.

186484681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 294912, while the sum is 46.

The square root of 186484681 is about 13655.9394037906. The cubic root of 186484681 is about 571.3221396509.

The spelling of 186484681 in words is "one hundred eighty-six million, four hundred eighty-four thousand, six hundred eighty-one".