1680419194 has 16 divisors (see below), whose sum is σ = 2583342720. Its totient is φ = 819324640.

The previous prime is 1680419189. The next prime is 1680419197. The reversal of 1680419194 is 4919140861.

It is a self number, because there is not a number n which added to its sum of digits gives 1680419194.

It is not an unprimeable number, because it can be changed into a prime (1680419197) 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, 244497 + ... + 251275.

It is an arithmetic number, because the mean of its divisors is an integer number (161458920).

Almost surely, 2^1680419194 is an apocalyptic number.

1680419194 is a deficient number, since it is larger than the sum of its proper divisors (902923526).

1680419194 is a wasteful number, since it uses less digits than its factorization.

1680419194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9845.

The product of its (nonzero) digits is 62208, while the sum is 43.

The square root of 1680419194 is about 40992.9163880786. The cubic root of 1680419194 is about 1188.8832575847.

The spelling of 1680419194 in words is "one billion, six hundred eighty million, four hundred nineteen thousand, one hundred ninety-four".