2183728773 has 4 divisors (see below), whose sum is σ = 2911638368. Its totient is φ = 1455819180.

The previous prime is 2183728769. The next prime is 2183728783. The reversal of 2183728773 is 3778273812.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2183728773 - 2² = 2183728769 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2183728783) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 363954793 + ... + 363954798.

It is an arithmetic number, because the mean of its divisors is an integer number (727909592).

Almost surely, 2^2183728773 is an apocalyptic number.

It is an amenable number.

2183728773 is a deficient number, since it is larger than the sum of its proper divisors (727909595).

2183728773 is an equidigital number, since it uses as much as digits as its factorization.

2183728773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 727909594.

The product of its digits is 790272, while the sum is 48.

The square root of 2183728773 is about 46730.3838310793. The cubic root of 2183728773 is about 1297.3771125926.

The spelling of 2183728773 in words is "two billion, one hundred eighty-three million, seven hundred twenty-eight thousand, seven hundred seventy-three".