2781321382 has 8 divisors (see below), whose sum is σ = 4767979536. Its totient is φ = 1191994872.

The previous prime is 2781321371. The next prime is 2781321461. The reversal of 2781321382 is 2831231872.

2781321382 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

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, 99332893 + ... + 99332920.

It is an arithmetic number, because the mean of its divisors is an integer number (595997442).

Almost surely, 2^2781321382 is an apocalyptic number.

2781321382 is a deficient number, since it is larger than the sum of its proper divisors (1986658154).

2781321382 is a wasteful number, since it uses less digits than its factorization.

2781321382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198665822.

The product of its digits is 32256, while the sum is 37.

The square root of 2781321382 is about 52738.2345362451. The cubic root of 2781321382 is about 1406.3186131408.

The spelling of 2781321382 in words is "two billion, seven hundred eighty-one million, three hundred twenty-one thousand, three hundred eighty-two".