8168922644 has 24 divisors (see below), whose sum is σ = 14573630400. Its totient is φ = 4005368640.

The previous prime is 8168922613. The next prime is 8168922649. The reversal of 8168922644 is 4462298618.

It is a junction number, because it is equal to n+sod(n) for n = 8168922592 and 8168922601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8168922649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54209 + ... + 138839.

It is an arithmetic number, because the mean of its divisors is an integer number (607234600).

Almost surely, 2^8168922644 is an apocalyptic number.

It is an amenable number.

8168922644 is a deficient number, since it is larger than the sum of its proper divisors (6404707756).

8168922644 is a wasteful number, since it uses less digits than its factorization.

8168922644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85103 (or 85101 counting only the distinct ones).

The product of its digits is 1327104, while the sum is 50.

The square root of 8168922644 is about 90382.0924962462. The cubic root of 8168922644 is about 2013.9789537885.

The spelling of 8168922644 in words is "eight billion, one hundred sixty-eight million, nine hundred twenty-two thousand, six hundred forty-four".