2001781682 has 8 divisors (see below), whose sum is σ = 3010855296. Its totient is φ = 998163252.

The previous prime is 2001781679. The next prime is 2001781697. The reversal of 2001781682 is 2861871002.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1362878 + ... + 1364345.

It is an arithmetic number, because the mean of its divisors is an integer number (376356912).

Almost surely, 2^2001781682 is an apocalyptic number.

2001781682 is a deficient number, since it is larger than the sum of its proper divisors (1009073614).

2001781682 is a wasteful number, since it uses less digits than its factorization.

2001781682 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2727592.

The product of its (nonzero) digits is 10752, while the sum is 35.

The square root of 2001781682 is about 44741.2749259562. The cubic root of 2001781682 is about 1260.2950686291.

The spelling of 2001781682 in words is "two billion, one million, seven hundred eighty-one thousand, six hundred eighty-two".