1988072227 has 2 divisors, whose sum is σ = 1988072228. Its totient is φ = 1988072226.

The previous prime is 1988072171. The next prime is 1988072237. The reversal of 1988072227 is 7222708891.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1988072227 - 2¹¹ = 1988070179 is a prime.

It is not a weakly prime, because it can be changed into another prime (1988072237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 994036113 + 994036114.

It is an arithmetic number, because the mean of its divisors is an integer number (994036114).

Almost surely, 2^1988072227 is an apocalyptic number.

1988072227 is a deficient number, since it is larger than the sum of its proper divisors (1).

1988072227 is an equidigital number, since it uses as much as digits as its factorization.

1988072227 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 225792, while the sum is 46.

The square root of 1988072227 is about 44587.8035677919. The cubic root of 1988072227 is about 1257.4113787515.

The spelling of 1988072227 in words is "one billion, nine hundred eighty-eight million, seventy-two thousand, two hundred twenty-seven".