1800530018 has 32 divisors (see below), whose sum is σ = 3196661760. Its totient is φ = 744206400.

The previous prime is 1800529987. The next prime is 1800530029. The reversal of 1800530018 is 8100350081.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 465380 + ... + 469232.

It is an arithmetic number, because the mean of its divisors is an integer number (99895680).

Almost surely, 2^1800530018 is an apocalyptic number.

1800530018 is a deficient number, since it is larger than the sum of its proper divisors (1396131742).

1800530018 is a wasteful number, since it uses less digits than its factorization.

1800530018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5042.

The product of its (nonzero) digits is 960, while the sum is 26.

The square root of 1800530018 is about 42432.6527334787. The cubic root of 1800530018 is about 1216.5597828251.

Adding to 1800530018 its reverse (8100350081), we get a palindrome (9900880099).

The spelling of 1800530018 in words is "one billion, eight hundred million, five hundred thirty thousand, eighteen".