1800000306 has 160 divisors (see below), whose sum is σ = 4553472000. Its totient is φ = 527679360.

The previous prime is 1800000289. The next prime is 1800000317. The reversal of 1800000306 is 6030000081.

1800000306 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×1800000306² = 6480002203200187272, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 5157420 + ... + 5157768.

It is an arithmetic number, because the mean of its divisors is an integer number (28459200).

Almost surely, 2^1800000306 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1800000306, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2276736000).

1800000306 is an abundant number, since it is smaller than the sum of its proper divisors (2753471694).

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

1800000306 is a wasteful number, since it uses less digits than its factorization.

1800000306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 486 (or 477 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 1800000306 is about 42426.4104774373. The cubic root of 1800000306 is about 1216.4404680463.

Adding to 1800000306 its reverse (6030000081), we get a palindrome (7830000387).

The spelling of 1800000306 in words is "one billion, eight hundred million, three hundred six", and thus it is an aban number.