1681158306 has 16 divisors (see below), whose sum is σ = 3409674048. Its totient is φ = 552493200.

The previous prime is 1681158299. The next prime is 1681158317. The reversal of 1681158306 is 6038511861.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1972765 + ... + 1973616.

It is an arithmetic number, because the mean of its divisors is an integer number (213104628).

Almost surely, 2^1681158306 is an apocalyptic number.

1681158306 is an abundant number, since it is smaller than the sum of its proper divisors (1728515742).

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

1681158306 is a wasteful number, since it uses less digits than its factorization.

1681158306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3946457.

The product of its (nonzero) digits is 34560, while the sum is 39.

The square root of 1681158306 is about 41001.9305155257. The cubic root of 1681158306 is about 1189.0575373291.

The spelling of 1681158306 in words is "one billion, six hundred eighty-one million, one hundred fifty-eight thousand, three hundred six".