1680610938218 has 24 divisors (see below), whose sum is σ = 2678753709612. Its totient is φ = 790632026624.

The previous prime is 1680610938211. The next prime is 1680610938271. The reversal of 1680610938218 is 8128390160861.

It can be written as a sum of positive squares in 6 ways, for example, as 1658874448729 + 21736489489 = 1287973^2 + 147433^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1680610938218.

It is not an unprimeable number, because it can be changed into a prime (1680610938211) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1436180 + ... + 2328912.

Almost surely, 2^{1680610938218} is an apocalyptic number.

1680610938218 is a deficient number, since it is larger than the sum of its proper divisors (998142771394).

1680610938218 is a wasteful number, since it uses less digits than its factorization.

1680610938218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 896026 (or 896009 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 53.

The spelling of 1680610938218 in words is "one trillion, six hundred eighty billion, six hundred ten million, nine hundred thirty-eight thousand, two hundred eighteen".