1982216227 has 2 divisors, whose sum is σ = 1982216228. Its totient is φ = 1982216226.

The previous prime is 1982216189. The next prime is 1982216237. The reversal of 1982216227 is 7226122891.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1982216227 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1982216227.

It is not a weakly prime, because it can be changed into another prime (1982216237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 991108113 + 991108114.

It is an arithmetic number, because the mean of its divisors is an integer number (991108114).

Almost surely, 2^1982216227 is an apocalyptic number.

1982216227 is a deficient number, since it is larger than the sum of its proper divisors (1).

1982216227 is an equidigital number, since it uses as much as digits as its factorization.

1982216227 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48384, while the sum is 40.

The square root of 1982216227 is about 44522.0869569251. The cubic root of 1982216227 is about 1256.1755680693.

The spelling of 1982216227 in words is "one billion, nine hundred eighty-two million, two hundred sixteen thousand, two hundred twenty-seven".