1988438255 has 16 divisors (see below), whose sum is σ = 2513416800. Its totient is φ = 1506003840.

The previous prime is 1988438209. The next prime is 1988438311. The reversal of 1988438255 is 5528348891.

It is not a de Polignac number, because 1988438255 - 2¹² = 1988434159 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1988438197 and 1988438206.

It is a congruent number.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 152285 + ... + 164825.

It is an arithmetic number, because the mean of its divisors is an integer number (157088550).

Almost surely, 2^1988438255 is an apocalyptic number.

1988438255 is a deficient number, since it is larger than the sum of its proper divisors (524978545).

1988438255 is a wasteful number, since it uses less digits than its factorization.

1988438255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14234.

The product of its digits is 2764800, while the sum is 53.

The square root of 1988438255 is about 44591.9079542466. The cubic root of 1988438255 is about 1257.4885422004.

The spelling of 1988438255 in words is "one billion, nine hundred eighty-eight million, four hundred thirty-eight thousand, two hundred fifty-five".