18300015306 has 12 divisors (see below), whose sum is σ = 39650033202. Its totient is φ = 6100005096.

The previous prime is 18300015301. The next prime is 18300015329. The reversal of 18300015306 is 60351000381.

It can be written as a sum of positive squares in only one way, i.e., 17303034681 + 996980625 = 131541^2 + 31575^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 18300015306.

It is not an unprimeable number, because it can be changed into a prime (18300015301) 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, 508333741 + ... + 508333776.

Almost surely, 2^18300015306 is an apocalyptic number.

18300015306 is an abundant number, since it is smaller than the sum of its proper divisors (21350017896).

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

18300015306 is a wasteful number, since it uses less digits than its factorization.

18300015306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1016667525 (or 1016667522 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

Adding to 18300015306 its reverse (60351000381), we get a palindrome (78651015687).

The spelling of 18300015306 in words is "eighteen billion, three hundred million, fifteen thousand, three hundred six".