1809066864 has 80 divisors (see below), whose sum is σ = 5274126720. Its totient is φ = 529294080.

The previous prime is 1809066859. The next prime is 1809066871. The reversal of 1809066864 is 4686609081.

1809066864 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (48).

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, 43762 + ... + 74385.

It is an arithmetic number, because the mean of its divisors is an integer number (65926584).

Almost surely, 2^1809066864 is an apocalyptic number.

It is an amenable number.

1809066864 is an abundant number, since it is smaller than the sum of its proper divisors (3465059856).

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

1809066864 is a wasteful number, since it uses less digits than its factorization.

1809066864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118198 (or 118192 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 48.

The square root of 1809066864 is about 42533.1266661646. The cubic root of 1809066864 is about 1218.4794421849.

The spelling of 1809066864 in words is "one billion, eight hundred nine million, sixty-six thousand, eight hundred sixty-four".