2180243782 has 4 divisors (see below), whose sum is σ = 3270365676. Its totient is φ = 1090121890.

The previous prime is 2180243777. The next prime is 2180243803. The reversal of 2180243782 is 2873420812.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 545060944 + ... + 545060947.

It is an arithmetic number, because the mean of its divisors is an integer number (817591419).

Almost surely, 2^2180243782 is an apocalyptic number.

2180243782 is a deficient number, since it is larger than the sum of its proper divisors (1090121894).

2180243782 is a wasteful number, since it uses less digits than its factorization.

2180243782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1090121893.

The product of its (nonzero) digits is 43008, while the sum is 37.

The square root of 2180243782 is about 46693.0806651264. The cubic root of 2180243782 is about 1296.6865880576.

The spelling of 2180243782 in words is "two billion, one hundred eighty million, two hundred forty-three thousand, seven hundred eighty-two".