1983775275 has 72 divisors (see below), whose sum is σ = 3751220720. Its totient is φ = 999371520.

The previous prime is 1983775253. The next prime is 1983775291. The reversal of 1983775275 is 5725773891.

It is a happy number.

It is not a de Polignac number, because 1983775275 - 2²¹ = 1981678123 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 2620197 + ... + 2620953.

Almost surely, 2^1983775275 is an apocalyptic number.

1983775275 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1983775275 is a deficient number, since it is larger than the sum of its proper divisors (1767445445).

1983775275 is a wasteful number, since it uses less digits than its factorization.

1983775275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1405 (or 1397 counting only the distinct ones).

The product of its digits is 3704400, while the sum is 54.

The square root of 1983775275 is about 44539.5922186093. The cubic root of 1983775275 is about 1256.5048165061.

The spelling of 1983775275 in words is "one billion, nine hundred eighty-three million, seven hundred seventy-five thousand, two hundred seventy-five".