1683668700187 has 2 divisors, whose sum is σ = 1683668700188. Its totient is φ = 1683668700186.

The previous prime is 1683668700163. The next prime is 1683668700221. The reversal of 1683668700187 is 7810078663861.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1683668700187 - 2³¹ = 1681521216539 is a prime.

It is not a weakly prime, because it can be changed into another prime (1683668770187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 841834350093 + 841834350094.

It is an arithmetic number, because the mean of its divisors is an integer number (841834350094).

Almost surely, 2^{1683668700187} is an apocalyptic number.

1683668700187 is a deficient number, since it is larger than the sum of its proper divisors (1).

1683668700187 is an equidigital number, since it uses as much as digits as its factorization.

1683668700187 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16257024, while the sum is 61.

The spelling of 1683668700187 in words is "one trillion, six hundred eighty-three billion, six hundred sixty-eight million, seven hundred thousand, one hundred eighty-seven".