8981633953 has 4 divisors (see below), whose sum is σ = 9509965380. Its totient is φ = 8453302528.

The previous prime is 8981633933. The next prime is 8981633959. The reversal of 8981633953 is 3593361898.

It is a happy number.

8981633953 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7837029729 + 1144604224 = 88527^2 + 33832^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8981633953 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8981633894 and 8981633903.

It is not an unprimeable number, because it can be changed into a prime (8981633959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 264165688 + ... + 264165721.

It is an arithmetic number, because the mean of its divisors is an integer number (2377491345).

Almost surely, 2^8981633953 is an apocalyptic number.

It is an amenable number.

8981633953 is a deficient number, since it is larger than the sum of its proper divisors (528331427).

8981633953 is a wasteful number, since it uses less digits than its factorization.

8981633953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 528331426.

The product of its digits is 4199040, while the sum is 55.

The square root of 8981633953 is about 94771.4828046918. The cubic root of 8981633953 is about 2078.6679366334.

The spelling of 8981633953 in words is "eight billion, nine hundred eighty-one million, six hundred thirty-three thousand, nine hundred fifty-three".