8894067381 has 20 divisors (see below), whose sum is σ = 13308379084. Its totient is φ = 5919480000.

The previous prime is 8894067367. The next prime is 8894067421. The reversal of 8894067381 is 1837604988.

It can be written as a sum of positive squares in 2 ways, for example, as 8179574481 + 714492900 = 90441^2 + 26730^2 .

It is not a de Polignac number, because 8894067381 - 2⁷ = 8894067253 is a prime.

It is a super-2 number, since 2×8894067381² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8894067341) by changing a digit.

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 19 ways as a sum of consecutive naturals, for example, 42670 + ... + 140031.

Almost surely, 2^8894067381 is an apocalyptic number.

8894067381 is a gapful number since it is divisible by the number (81) formed by its first and last digit.

It is an amenable number.

8894067381 is a deficient number, since it is larger than the sum of its proper divisors (4414311703).

8894067381 is a wasteful number, since it uses less digits than its factorization.

8894067381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183314 (or 183305 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 54.

The square root of 8894067381 is about 94308.3632611658. The cubic root of 8894067381 is about 2071.8905286852.

The spelling of 8894067381 in words is "eight billion, eight hundred ninety-four million, sixty-seven thousand, three hundred eighty-one".