1800018002 has 16 divisors (see below), whose sum is σ = 2736115200. Its totient is φ = 887995680.

The previous prime is 1800017993. The next prime is 1800018041. The reversal of 1800018002 is 2008100081.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 292574 + ... + 298662.

It is an arithmetic number, because the mean of its divisors is an integer number (171007200).

Almost surely, 2^1800018002 is an apocalyptic number.

1800018002 is a deficient number, since it is larger than the sum of its proper divisors (936097198).

1800018002 is a wasteful number, since it uses less digits than its factorization.

1800018002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8041.

The product of its (nonzero) digits is 128, while the sum is 20.

The square root of 1800018002 is about 42426.6190262670. The cubic root of 1800018002 is about 1216.4444543530. Note that the first 4 decimals are identical.

Adding to 1800018002 its reverse (2008100081), we get a palindrome (3808118083).

The spelling of 1800018002 in words is "one billion, eight hundred million, eighteen thousand, two".