1801809284 has 12 divisors (see below), whose sum is σ = 3439817808. Its totient is φ = 819004200.

The previous prime is 1801809283. The next prime is 1801809293. The reversal of 1801809284 is 4829081081.

It is not an unprimeable number, because it can be changed into a prime (1801809281) 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, 20475062 + ... + 20475149.

It is an arithmetic number, because the mean of its divisors is an integer number (286651484).

Almost surely, 2^1801809284 is an apocalyptic number.

It is an amenable number.

1801809284 is a deficient number, since it is larger than the sum of its proper divisors (1638008524).

1801809284 is a wasteful number, since it uses less digits than its factorization.

1801809284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40950226 (or 40950224 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 41.

The square root of 1801809284 is about 42447.7241321605. The cubic root of 1801809284 is about 1216.8478341425.

The spelling of 1801809284 in words is "one billion, eight hundred one million, eight hundred nine thousand, two hundred eighty-four".