8642423790 has 1152 divisors, whose sum is σ = 35135493120. Its totient is φ = 1478062080.

The previous prime is 8642423761. The next prime is 8642423813. The reversal of 8642423790 is 973242468.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 575 ways as a sum of consecutive naturals, for example, 454864401 + ... + 454864419.

It is an arithmetic number, because the mean of its divisors is an integer number (30499560).

Almost surely, 2^8642423790 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8642423790, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17567746560).

8642423790 is an abundant number, since it is smaller than the sum of its proper divisors (26493069330).

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

8642423790 is a wasteful number, since it uses less digits than its factorization.

8642423790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100 (or 77 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 45.

The square root of 8642423790 is about 92964.6373090327. The cubic root of 8642423790 is about 2052.1629987479.

The spelling of 8642423790 in words is "eight billion, six hundred forty-two million, four hundred twenty-three thousand, seven hundred ninety".