1680011394 has 16 divisors (see below), whose sum is σ = 3362264640. Its totient is φ = 559630160.

The previous prime is 1680011357. The next prime is 1680011413. The reversal of 1680011394 is 4931100861.

It is a super-3 number, since 3×1680011394³ (a number of 29 digits) contains 333 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83589 + ... + 101720.

It is an arithmetic number, because the mean of its divisors is an integer number (210141540).

Almost surely, 2^1680011394 is an apocalyptic number.

1680011394 is an abundant number, since it is smaller than the sum of its proper divisors (1682253246).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1680011394 is a wasteful number, since it uses less digits than its factorization.

1680011394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186825.

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 1680011394 is about 40987.9420561706. The cubic root of 1680011394 is about 1188.7870780484.

The spelling of 1680011394 in words is "one billion, six hundred eighty million, eleven thousand, three hundred ninety-four".