8442642864 has 40 divisors (see below), whose sum is σ = 22562238960. Its totient is φ = 2717171968.

The previous prime is 8442642847. The next prime is 8442642979. The reversal of 8442642864 is 4682462448.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3031167 + ... + 3033950.

It is an arithmetic number, because the mean of its divisors is an integer number (564055974).

Almost surely, 2^8442642864 is an apocalyptic number.

It is an amenable number.

8442642864 is an abundant number, since it is smaller than the sum of its proper divisors (14119596096).

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

8442642864 is a wasteful number, since it uses less digits than its factorization.

8442642864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6065157 (or 6065151 counting only the distinct ones).

The product of its digits is 2359296, while the sum is 48.

The square root of 8442642864 is about 91883.8552956938. The cubic root of 8442642864 is about 2036.2267545293.

The spelling of 8442642864 in words is "eight billion, four hundred forty-two million, six hundred forty-two thousand, eight hundred sixty-four".