1983775273 has 4 divisors (see below), whose sum is σ = 1983896208. Its totient is φ = 1983654340.

The previous prime is 1983775253. The next prime is 1983775291. The reversal of 1983775273 is 3725773891.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1983775273 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1983775273.

It is not an unprimeable number, because it can be changed into a prime (1983775223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31111 + ... + 70252.

It is an arithmetic number, because the mean of its divisors is an integer number (495974052).

Almost surely, 2^1983775273 is an apocalyptic number.

It is an amenable number.

1983775273 is a deficient number, since it is larger than the sum of its proper divisors (120935).

1983775273 is a wasteful number, since it uses less digits than its factorization.

1983775273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120934.

The product of its digits is 2222640, while the sum is 52.

The square root of 1983775273 is about 44539.5921961573. The cubic root of 1983775273 is about 1256.5048160838.

The spelling of 1983775273 in words is "one billion, nine hundred eighty-three million, seven hundred seventy-five thousand, two hundred seventy-three".