18530766 has 12 divisors (see below), whose sum is σ = 40150032. Its totient is φ = 6176916.

The previous prime is 18530753. The next prime is 18530767. The reversal of 18530766 is 66703581.

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

It is a self number, because there is not a number n which added to its sum of digits gives 18530766.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18530767) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 514726 + ... + 514761.

It is an arithmetic number, because the mean of its divisors is an integer number (3345836).

Almost surely, 2^18530766 is an apocalyptic number.

18530766 is an abundant number, since it is smaller than the sum of its proper divisors (21619266).

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

18530766 is a wasteful number, since it uses less digits than its factorization.

18530766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1029495 (or 1029492 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 18530766 is about 4304.7376226665. The cubic root of 18530766 is about 264.6251541364.

The spelling of 18530766 in words is "eighteen million, five hundred thirty thousand, seven hundred sixty-six".