1988129327 has 2 divisors, whose sum is σ = 1988129328. Its totient is φ = 1988129326.

The previous prime is 1988129317. The next prime is 1988129329. The reversal of 1988129327 is 7239218891.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1988129327 - 2¹⁴ = 1988112943 is a prime.

Together with 1988129329, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1988129329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 994064663 + 994064664.

It is an arithmetic number, because the mean of its divisors is an integer number (994064664).

Almost surely, 2^1988129327 is an apocalyptic number.

1988129327 is a deficient number, since it is larger than the sum of its proper divisors (1).

1988129327 is an equidigital number, since it uses as much as digits as its factorization.

1988129327 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 435456, while the sum is 50.

The square root of 1988129327 is about 44588.4438728243. The cubic root of 1988129327 is about 1257.4234167954.

The spelling of 1988129327 in words is "one billion, nine hundred eighty-eight million, one hundred twenty-nine thousand, three hundred twenty-seven".