1800773916 has 12 divisors (see below), whose sum is σ = 4201805832. Its totient is φ = 600257968.

The previous prime is 1800773899. The next prime is 1800773917. The reversal of 1800773916 is 6193770081.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1800773917) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75032235 + ... + 75032258.

It is an arithmetic number, because the mean of its divisors is an integer number (350150486).

Almost surely, 2^1800773916 is an apocalyptic number.

It is an amenable number.

1800773916 is an abundant number, since it is smaller than the sum of its proper divisors (2401031916).

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

1800773916 is a wasteful number, since it uses less digits than its factorization.

1800773916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150064500 (or 150064498 counting only the distinct ones).

The product of its (nonzero) digits is 63504, while the sum is 42.

The square root of 1800773916 is about 42435.5265785639. The cubic root of 1800773916 is about 1216.6147116698.

The spelling of 1800773916 in words is "one billion, eight hundred million, seven hundred seventy-three thousand, nine hundred sixteen".