1863314420388 has 24 divisors (see below), whose sum is σ = 4349284826208. Its totient is φ = 620883209856.

The previous prime is 1863314420381. The next prime is 1863314420389. The reversal of 1863314420388 is 8830244133681.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1863314420388.

It is not an unprimeable number, because it can be changed into a prime (1863314420381) 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, 27664581 + ... + 27731852.

It is an arithmetic number, because the mean of its divisors is an integer number (181220201092).

Almost surely, 2^{1863314420388} is an apocalyptic number.

It is an amenable number.

1863314420388 is an abundant number, since it is smaller than the sum of its proper divisors (2485970405820).

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

1863314420388 is a wasteful number, since it uses less digits than its factorization.

1863314420388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55399243 (or 55399241 counting only the distinct ones).

The product of its (nonzero) digits is 2654208, while the sum is 51.

The spelling of 1863314420388 in words is "one trillion, eight hundred sixty-three billion, three hundred fourteen million, four hundred twenty thousand, three hundred eighty-eight".