1125802816 has 28 divisors (see below), whose sum is σ = 2237808580. Its totient is φ = 561945600.

The previous prime is 1125802771. The next prime is 1125802889. The reversal of 1125802816 is 6182085211.

It can be written as a sum of positive squares in 2 ways, for example, as 835441216 + 290361600 = 28904^2 + 17040^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23830 + ... + 53098.

It is an arithmetic number, because the mean of its divisors is an integer number (79921735).

Almost surely, 2^1125802816 is an apocalyptic number.

1125802816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1125802816 is a deficient number, since it is larger than the sum of its proper divisors (1112005764).

1125802816 is an equidigital number, since it uses as much as digits as its factorization.

1125802816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29882 (or 29872 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 34.

The square root of 1125802816 is about 33552.9852025122. The cubic root of 1125802816 is about 1040.2892489340.

The spelling of 1125802816 in words is "one billion, one hundred twenty-five million, eight hundred two thousand, eight hundred sixteen".