1816260066 has 48 divisors (see below), whose sum is σ = 4053781368. Its totient is φ = 587347200.

The previous prime is 1816260037. The next prime is 1816260137. The reversal of 1816260066 is 6600626181.

1816260066 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 174794841 + 1641465225 = 13221^2 + 40515^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1816260066.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 126780 + ... + 140376.

Almost surely, 2^1816260066 is an apocalyptic number.

1816260066 is an abundant number, since it is smaller than the sum of its proper divisors (2237521302).

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

1816260066 is a wasteful number, since it uses less digits than its factorization.

1816260066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13827 (or 13824 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 1816260066 is about 42617.6027716248. The cubic root of 1816260066 is about 1220.0922769046.

The spelling of 1816260066 in words is "one billion, eight hundred sixteen million, two hundred sixty thousand, sixty-six".