1800002073 has 32 divisors (see below), whose sum is σ = 2574028800. Its totient is φ = 1116360000.

The previous prime is 1800002053. The next prime is 1800002081. The reversal of 1800002073 is 3702000081.

It is not a de Polignac number, because 1800002073 - 2⁹ = 1800001561 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1800002033) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 675618 + ... + 678276.

It is an arithmetic number, because the mean of its divisors is an integer number (80438400).

Almost surely, 2^1800002073 is an apocalyptic number.

It is an amenable number.

1800002073 is a deficient number, since it is larger than the sum of its proper divisors (774026727).

1800002073 is a wasteful number, since it uses less digits than its factorization.

1800002073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2973.

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 1800002073 is about 42426.4313017251. The cubic root of 1800002073 is about 1216.4408660925.

The spelling of 1800002073 in words is "one billion, eight hundred million, two thousand, seventy-three".