1983191227 has 2 divisors, whose sum is σ = 1983191228. Its totient is φ = 1983191226.

The previous prime is 1983191201. The next prime is 1983191237. The reversal of 1983191227 is 7221913891.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1983191227 is a prime.

It is not a weakly prime, because it can be changed into another prime (1983191237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 991595613 + 991595614.

It is an arithmetic number, because the mean of its divisors is an integer number (991595614).

Almost surely, 2^1983191227 is an apocalyptic number.

1983191227 is a deficient number, since it is larger than the sum of its proper divisors (1).

1983191227 is an equidigital number, since it uses as much as digits as its factorization.

1983191227 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54432, while the sum is 43.

The square root of 1983191227 is about 44533.0352322857. The cubic root of 1983191227 is about 1256.3814942116.

The spelling of 1983191227 in words is "one billion, nine hundred eighty-three million, one hundred ninety-one thousand, two hundred twenty-seven".