1988803216 has 15 divisors (see below), whose sum is σ = 3853651881. Its totient is φ = 994312416.

The previous prime is 1988803213. The next prime is 1988803237. The reversal of 1988803216 is 6123088891.

The square root of 1988803216 is 44596.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 604963216 + 1383840000 = 24596^2 + 37200^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1988803213) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 172810 + ... + 183958.

Almost surely, 2^1988803216 is an apocalyptic number.

1988803216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

1988803216 is the 44596-th square number.

It is an amenable number.

1988803216 is a deficient number, since it is larger than the sum of its proper divisors (1864848665).

1988803216 is an frugal number, since it uses more digits than its factorization.

1988803216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22306 (or 11151 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 46.

The cubic root of 1988803216 is about 1257.5654712845.

The spelling of 1988803216 in words is "one billion, nine hundred eighty-eight million, eight hundred three thousand, two hundred sixteen".