8994891938 has 18 divisors (see below), whose sum is σ = 13600837521. Its totient is φ = 4461567264.

The previous prime is 8994891931. The next prime is 8994891943. The reversal of 8994891938 is 8391984998.

It can be written as a sum of positive squares in 2 ways, for example, as 8489226769 + 505665169 = 92137^2 + 22487^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=67063.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8994891931) by changing a digit.

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 8 ways as a sum of consecutive naturals, for example, 26690906 + ... + 26691242.

Almost surely, 2^8994891938 is an apocalyptic number.

8994891938 is a deficient number, since it is larger than the sum of its proper divisors (4605945583).

8994891938 is an frugal number, since it uses more digits than its factorization.

8994891938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1074 (or 538 counting only the distinct ones).

The product of its digits is 40310784, while the sum is 68.

The square root of 8994891938 is about 94841.4041334269. The cubic root of 8994891938 is about 2079.6902227585.

The spelling of 8994891938 in words is "eight billion, nine hundred ninety-four million, eight hundred ninety-one thousand, nine hundred thirty-eight".