186018066 has 128 divisors (see below), whose sum is σ = 477550080. Its totient is φ = 53222400.

The previous prime is 186018017. The next prime is 186018067. The reversal of 186018066 is 660810681.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 186018066.

It is not an unprimeable number, because it can be changed into a prime (186018067) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 661846 + ... + 662126.

It is an arithmetic number, because the mean of its divisors is an integer number (3730860).

Almost surely, 2^186018066 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 186018066, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (238775040).

186018066 is an abundant number, since it is smaller than the sum of its proper divisors (291532014).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

186018066 is a wasteful number, since it uses less digits than its factorization.

186018066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 369 (or 363 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 186018066 is about 13638.8440125987. The cubic root of 186018066 is about 570.8452280233.

The spelling of 186018066 in words is "one hundred eighty-six million, eighteen thousand, sixty-six".