186361481 has 8 divisors (see below), whose sum is σ = 198858720. Its totient is φ = 174133152.

The previous prime is 186361459. The next prime is 186361529. The reversal of 186361481 is 184163681.

186361481 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 186361481 - 2¹⁸ = 186099337 is a prime.

It is a super-2 number, since 2×186361481² = 69461203201026722, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (186361081) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65795 + ... + 68568.

It is an arithmetic number, because the mean of its divisors is an integer number (24857340).

Almost surely, 2^186361481 is an apocalyptic number.

It is an amenable number.

186361481 is a deficient number, since it is larger than the sum of its proper divisors (12497239).

186361481 is a wasteful number, since it uses less digits than its factorization.

186361481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134455.

The product of its digits is 27648, while the sum is 38.

The square root of 186361481 is about 13651.4278007833. The cubic root of 186361481 is about 571.1962984055.

The spelling of 186361481 in words is "one hundred eighty-six million, three hundred sixty-one thousand, four hundred eighty-one".