1081983625 has 8 divisors (see below), whose sum is σ = 1350315720. Its totient is φ = 865586800.

The previous prime is 1081983613. The next prime is 1081983631. The reversal of 1081983625 is 5263891801.

It can be written as a sum of positive squares in 4 ways, for example, as 17397241 + 1064586384 = 4171^2 + 32628^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1081983625 is a prime.

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 7 ways as a sum of consecutive naturals, for example, 4327810 + ... + 4328059.

It is an arithmetic number, because the mean of its divisors is an integer number (168789465).

Almost surely, 2^1081983625 is an apocalyptic number.

It is an amenable number.

1081983625 is a deficient number, since it is larger than the sum of its proper divisors (268332095).

1081983625 is an frugal number, since it uses more digits than its factorization.

1081983625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8655884 (or 8655874 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 43.

The square root of 1081983625 is about 32893.5194985274. The cubic root of 1081983625 is about 1026.6133229134.

The spelling of 1081983625 in words is "one billion, eighty-one million, nine hundred eighty-three thousand, six hundred twenty-five".