1800434118 has 32 divisors (see below), whose sum is σ = 4127742720. Its totient is φ = 512851680.

The previous prime is 1800434099. The next prime is 1800434131. The reversal of 1800434118 is 8114340081.

It is a congruent number.

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, 50853 + ... + 78656.

It is an arithmetic number, because the mean of its divisors is an integer number (128991960).

Almost surely, 2^1800434118 is an apocalyptic number.

1800434118 is an abundant number, since it is smaller than the sum of its proper divisors (2327308602).

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

1800434118 is a wasteful number, since it uses less digits than its factorization.

1800434118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129852.

The product of its (nonzero) digits is 3072, while the sum is 30.

The square root of 1800434118 is about 42431.5226924512. The cubic root of 1800434118 is about 1216.5381836009.

Adding to 1800434118 its reverse (8114340081), we get a palindrome (9914774199).

The spelling of 1800434118 in words is "one billion, eight hundred million, four hundred thirty-four thousand, one hundred eighteen".