1288884916 has 24 divisors (see below), whose sum is σ = 2467334016. Its totient is φ = 584253120.

The previous prime is 1288884887. The next prime is 1288884929. The reversal of 1288884916 is 6194888821.

It is a super-2 number, since 2×1288884916² = 3322448653384654112, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23761 + ... + 56056.

It is an arithmetic number, because the mean of its divisors is an integer number (102805584).

Almost surely, 2^1288884916 is an apocalyptic number.

It is an amenable number.

1288884916 is a deficient number, since it is larger than the sum of its proper divisors (1178449100).

1288884916 is a wasteful number, since it uses less digits than its factorization.

1288884916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80199 (or 80197 counting only the distinct ones).

The product of its digits is 1769472, while the sum is 55.

The square root of 1288884916 is about 35901.0433831665. The cubic root of 1288884916 is about 1088.2734825143.

The spelling of 1288884916 in words is "one billion, two hundred eighty-eight million, eight hundred eighty-four thousand, nine hundred sixteen".