4890245640 has 256 divisors, whose sum is σ = 17423769600. Its totient is φ = 1074318336.

The previous prime is 4890245623. The next prime is 4890245693. The reversal of 4890245640 is 465420984.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 4890245592 and 4890245601.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 8939847 + ... + 8940393.

It is an arithmetic number, because the mean of its divisors is an integer number (68061600).

Almost surely, 2^4890245640 is an apocalyptic number.

4890245640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4890245640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8711884800).

4890245640 is an abundant number, since it is smaller than the sum of its proper divisors (12533523960).

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

4890245640 is a wasteful number, since it uses less digits than its factorization.

4890245640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 964 (or 960 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 42.

The square root of 4890245640 is about 69930.2912906846. The cubic root of 4890245640 is about 1697.3714441409.

The spelling of 4890245640 in words is "four billion, eight hundred ninety million, two hundred forty-five thousand, six hundred forty".