1808612388863 has 8 divisors (see below), whose sum is σ = 2066995614720. Its totient is φ = 1550231669880.

The previous prime is 1808612388827. The next prime is 1808612388893. The reversal of 1808612388863 is 3688832168081.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1808612388863 - 2¹⁰ = 1808612387839 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1808612388796 and 1808612388805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1808612388893) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1324118 + ... + 2317436.

It is an arithmetic number, because the mean of its divisors is an integer number (258374451840).

Almost surely, 2^{1808612388863} is an apocalyptic number.

1808612388863 is a deficient number, since it is larger than the sum of its proper divisors (258383225857).

1808612388863 is an equidigital number, since it uses as much as digits as its factorization.

1808612388863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1253437.

The product of its (nonzero) digits is 21233664, while the sum is 62.

The spelling of 1808612388863 in words is "one trillion, eight hundred eight billion, six hundred twelve million, three hundred eighty-eight thousand, eight hundred sixty-three".