1885965381668 has 24 divisors (see below), whose sum is σ = 3313610876352. Its totient is φ = 939222000864.

The previous prime is 1885965381607. The next prime is 1885965381719. The reversal of 1885965381668 is 8661835695881.

It is a junction number, because it is equal to n+sod(n) for n = 1885965381595 and 1885965381604.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2611355 + ... + 3254397.

It is an arithmetic number, because the mean of its divisors is an integer number (138067119848).

Almost surely, 2^{1885965381668} is an apocalyptic number.

It is an amenable number.

1885965381668 is a deficient number, since it is larger than the sum of its proper divisors (1427645494684).

1885965381668 is a wasteful number, since it uses less digits than its factorization.

1885965381668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 645971 (or 645969 counting only the distinct ones).

The product of its digits is 597196800, while the sum is 74.

The spelling of 1885965381668 in words is "one trillion, eight hundred eighty-five billion, nine hundred sixty-five million, three hundred eighty-one thousand, six hundred sixty-eight".