1800664146 has 24 divisors (see below), whose sum is σ = 3902368080. Its totient is φ = 600078456.

The previous prime is 1800664133. The next prime is 1800664169. The reversal of 1800664146 is 6414660081.

1800664146 is a `hidden beast` number, since 1 + 8 + 0 + 0 + 6 + 641 + 4 + 6 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 1800664146.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 88785 + ... + 107163.

It is an arithmetic number, because the mean of its divisors is an integer number (162598670).

Almost surely, 2^1800664146 is an apocalyptic number.

1800664146 is an abundant number, since it is smaller than the sum of its proper divisors (2101703934).

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

1800664146 is a wasteful number, since it uses less digits than its factorization.

1800664146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23830 (or 23827 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 1800664146 is about 42434.2331850123. The cubic root of 1800664146 is about 1216.5899907226.

The spelling of 1800664146 in words is "one billion, eight hundred million, six hundred sixty-four thousand, one hundred forty-six".