1820066365 has 16 divisors (see below), whose sum is σ = 2353252608. Its totient is φ = 1343382336.

The previous prime is 1820066363. The next prime is 1820066407. The reversal of 1820066365 is 5636600281.

It is a cyclic number.

It is not a de Polignac number, because 1820066365 - 2¹ = 1820066363 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1820066363) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 153334 + ... + 164776.

It is an arithmetic number, because the mean of its divisors is an integer number (147078288).

Almost surely, 2^1820066365 is an apocalyptic number.

It is an amenable number.

1820066365 is a deficient number, since it is larger than the sum of its proper divisors (533186243).

1820066365 is a wasteful number, since it uses less digits than its factorization.

1820066365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13908.

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 1820066365 is about 42662.2358181097. The cubic root of 1820066365 is about 1220.9439896695.

The spelling of 1820066365 in words is "one billion, eight hundred twenty million, sixty-six thousand, three hundred sixty-five".