8938320985 has 32 divisors (see below), whose sum is σ = 12495098880. Its totient is φ = 6073939200.

The previous prime is 8938320967. The next prime is 8938321057. The reversal of 8938320985 is 5890238398.

It is not a de Polignac number, because 8938320985 - 2⁵ = 8938320953 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (55).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 40942 + ... + 139831.

It is an arithmetic number, because the mean of its divisors is an integer number (390471840).

Almost surely, 2^8938320985 is an apocalyptic number.

It is an amenable number.

8938320985 is a deficient number, since it is larger than the sum of its proper divisors (3556777895).

8938320985 is a wasteful number, since it uses less digits than its factorization.

8938320985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180849.

The product of its (nonzero) digits is 3732480, while the sum is 55.

The square root of 8938320985 is about 94542.6939800215. The cubic root of 8938320985 is about 2075.3211665260.

It can be divided in two parts, 8938 and 320985, that added together give a palindrome (329923).

The spelling of 8938320985 in words is "eight billion, nine hundred thirty-eight million, three hundred twenty thousand, nine hundred eighty-five".