1863612745208 has 128 divisors (see below), whose sum is σ = 3829066629120. Its totient is φ = 847717073280.

The previous prime is 1863612745187. The next prime is 1863612745217. The reversal of 1863612745208 is 8025472163681.

It is a self number, because there is not a number n which added to its sum of digits gives 1863612745208.

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, 77499635 + ... + 77523677.

It is an arithmetic number, because the mean of its divisors is an integer number (29914583040).

Almost surely, 2^{1863612745208} is an apocalyptic number.

It is an amenable number.

1863612745208 is an abundant number, since it is smaller than the sum of its proper divisors (1965453883912).

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

1863612745208 is a wasteful number, since it uses less digits than its factorization.

1863612745208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24337 (or 24333 counting only the distinct ones).

The product of its (nonzero) digits is 3870720, while the sum is 53.

The spelling of 1863612745208 in words is "one trillion, eight hundred sixty-three billion, six hundred twelve million, seven hundred forty-five thousand, two hundred eight".