8920868985 has 48 divisors (see below), whose sum is σ = 18326345856. Its totient is φ = 4078107648.

The previous prime is 8920868969. The next prime is 8920868993. The reversal of 8920868985 is 5898680298.

8920868985 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 8920868985 - 2⁴ = 8920868969 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 515944 + ... + 532953.

It is an arithmetic number, because the mean of its divisors is an integer number (381798872).

Almost surely, 2^8920868985 is an apocalyptic number.

It is an amenable number.

8920868985 is an abundant number, since it is smaller than the sum of its proper divisors (9405476871).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8920868985 is a wasteful number, since it uses less digits than its factorization.

8920868985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1048924 (or 1048912 counting only the distinct ones).

The product of its (nonzero) digits is 19906560, while the sum is 63.

The square root of 8920868985 is about 94450.3519580525. The cubic root of 8920868985 is about 2073.9696038640.

The spelling of 8920868985 in words is "eight billion, nine hundred twenty million, eight hundred sixty-eight thousand, nine hundred eighty-five".