1680774959 has 8 divisors (see below), whose sum is σ = 1688129520. Its totient is φ = 1673433216.

The previous prime is 1680774919. The next prime is 1680774971. The reversal of 1680774959 is 9594770861.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1680774959 - 2¹² = 1680770863 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1680774919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 333047 + ... + 338055.

It is an arithmetic number, because the mean of its divisors is an integer number (211016190).

Almost surely, 2^1680774959 is an apocalyptic number.

1680774959 is a deficient number, since it is larger than the sum of its proper divisors (7354561).

1680774959 is a wasteful number, since it uses less digits than its factorization.

1680774959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6409.

The product of its (nonzero) digits is 3810240, while the sum is 56.

The square root of 1680774959 is about 40997.2555057043. The cubic root of 1680774959 is about 1188.9671519702.

The spelling of 1680774959 in words is "one billion, six hundred eighty million, seven hundred seventy-four thousand, nine hundred fifty-nine".