2183856782 has 4 divisors (see below), whose sum is σ = 3275785176. Its totient is φ = 1091928390.

The previous prime is 2183856769. The next prime is 2183856799. The reversal of 2183856782 is 2876583812.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 2183856782.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 545964194 + ... + 545964197.

It is an arithmetic number, because the mean of its divisors is an integer number (818946294).

Almost surely, 2^2183856782 is an apocalyptic number.

2183856782 is a deficient number, since it is larger than the sum of its proper divisors (1091928394).

2183856782 is a wasteful number, since it uses less digits than its factorization.

2183856782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1091928393.

The product of its digits is 1290240, while the sum is 50.

The square root of 2183856782 is about 46731.7534659251. The cubic root of 2183856782 is about 1297.4024626123.

The spelling of 2183856782 in words is "two billion, one hundred eighty-three million, eight hundred fifty-six thousand, seven hundred eighty-two".