1680004919 has 2 divisors, whose sum is σ = 1680004920. Its totient is φ = 1680004918.

The previous prime is 1680004913. The next prime is 1680004951. The reversal of 1680004919 is 9194000861.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (9194000861) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1680004919 - 2¹² = 1680000823 is a prime.

It is a super-2 number, since 2×1680004919² = 5644833055728393122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1680004913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 840002459 + 840002460.

It is an arithmetic number, because the mean of its divisors is an integer number (840002460).

Almost surely, 2^1680004919 is an apocalyptic number.

1680004919 is a deficient number, since it is larger than the sum of its proper divisors (1).

1680004919 is an equidigital number, since it uses as much as digits as its factorization.

1680004919 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 38.

The square root of 1680004919 is about 40987.8630694502. The cubic root of 1680004919 is about 1188.7855507956.

The spelling of 1680004919 in words is "one billion, six hundred eighty million, four thousand, nine hundred nineteen".