8642491392 has 176 divisors, whose sum is σ = 24383208960. Its totient is φ = 2714001408.

The previous prime is 8642491391. The next prime is 8642491409. The reversal of 8642491392 is 2931942468.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8642491391) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15350503 + ... + 15351065.

It is an arithmetic number, because the mean of its divisors is an integer number (138540960).

Almost surely, 2^8642491392 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8642491392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12191604480).

8642491392 is an abundant number, since it is smaller than the sum of its proper divisors (15740717568).

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

8642491392 is a wasteful number, since it uses less digits than its factorization.

8642491392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 868 (or 850 counting only the distinct ones).

The product of its digits is 746496, while the sum is 48.

The square root of 8642491392 is about 92965.0008981875. Note that the first 3 decimals coincide. The cubic root of 8642491392 is about 2052.1683494830.

The spelling of 8642491392 in words is "eight billion, six hundred forty-two million, four hundred ninety-one thousand, three hundred ninety-two".