1808612388864 has 416 divisors, whose sum is σ = 5491518996480. Its totient is φ = 588039782400.

The previous prime is 1808612388827. The next prime is 1808612388893. The reversal of 1808612388864 is 4688832168081.

1808612388864 is a `hidden beast` number, since 1 + 8 + 0 + 8 + 612 + 3 + 8 + 8 + 8 + 6 + 4 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 856755169 + ... + 856757279.

Almost surely, 2^{1808612388864} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1808612388864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2745759498240).

1808612388864 is an abundant number, since it is smaller than the sum of its proper divisors (3682906607616).

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

1808612388864 is a wasteful number, since it uses less digits than its factorization.

1808612388864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2332 (or 2304 counting only the distinct ones).

The product of its (nonzero) digits is 28311552, while the sum is 63.

The spelling of 1808612388864 in words is "one trillion, eight hundred eight billion, six hundred twelve million, three hundred eighty-eight thousand, eight hundred sixty-four".