8940322638 has 24 divisors (see below), whose sum is σ = 20860753368. Its totient is φ = 2750868432.

The previous prime is 8940322637. The next prime is 8940322679. The reversal of 8940322638 is 8362230498.

8940322638 is a `hidden beast` number, since 8 + 9 + 4 + 0 + 3 + 2 + 2 + 638 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 8940322593 and 8940322602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8940322631) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19103020 + ... + 19103487.

It is an arithmetic number, because the mean of its divisors is an integer number (869198057).

Almost surely, 2^8940322638 is an apocalyptic number.

8940322638 is an abundant number, since it is smaller than the sum of its proper divisors (11920430730).

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

8940322638 is a wasteful number, since it uses less digits than its factorization.

8940322638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38206528 (or 38206525 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 45.

The square root of 8940322638 is about 94553.2793614267. The cubic root of 8940322638 is about 2075.4760711886.

The spelling of 8940322638 in words is "eight billion, nine hundred forty million, three hundred twenty-two thousand, six hundred thirty-eight".