1138289216 has 28 divisors (see below), whose sum is σ = 2259871020. Its totient is φ = 568872960.

The previous prime is 1138289203. The next prime is 1138289239. The reversal of 1138289216 is 6129828311.

It can be written as a sum of positive squares in 2 ways, for example, as 204375616 + 933913600 = 14296^2 + 30560^2 .

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 238340 + ... + 243068.

Almost surely, 2^1138289216 is an apocalyptic number.

1138289216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1138289216 is a deficient number, since it is larger than the sum of its proper divisors (1121581804).

1138289216 is an equidigital number, since it uses as much as digits as its factorization.

1138289216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8502 (or 8492 counting only the distinct ones).

The product of its digits is 41472, while the sum is 41.

The square root of 1138289216 is about 33738.5419957650. The cubic root of 1138289216 is about 1044.1211037663.

The spelling of 1138289216 in words is "one billion, one hundred thirty-eight million, two hundred eighty-nine thousand, two hundred sixteen".