1681683306 has 16 divisors (see below), whose sum is σ = 3445400448. Its totient is φ = 546888800.

The previous prime is 1681683301. The next prime is 1681683323. The reversal of 1681683306 is 6033861861.

1681683306 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (1681683301) 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, 3417810 + ... + 3418301.

It is an arithmetic number, because the mean of its divisors is an integer number (215337528).

Almost surely, 2^1681683306 is an apocalyptic number.

1681683306 is an abundant number, since it is smaller than the sum of its proper divisors (1763717142).

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

1681683306 is a wasteful number, since it uses less digits than its factorization.

1681683306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6836157.

The product of its (nonzero) digits is 124416, while the sum is 42.

The square root of 1681683306 is about 41008.3321533563. The cubic root of 1681683306 is about 1189.1812992683.

The spelling of 1681683306 in words is "one billion, six hundred eighty-one million, six hundred eighty-three thousand, three hundred six".