4891985280 has 1280 divisors, whose sum is σ = 23139768960. Its totient is φ = 955514880.

The previous prime is 4891985279. The next prime is 4891985317. The reversal of 4891985280 is 825891984.

4891985280 is a `hidden beast` number, since 489 + 1 + 9 + 85 + 2 + 80 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 80196450 + ... + 80196510.

Almost surely, 2^4891985280 is an apocalyptic number.

4891985280 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 4891985280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11569884480).

4891985280 is an abundant number, since it is smaller than the sum of its proper divisors (18247783680).

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

4891985280 is a wasteful number, since it uses less digits than its factorization.

4891985280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129 (or 108 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 54.

The square root of 4891985280 is about 69942.7285713104. The cubic root of 4891985280 is about 1697.5726927355.

The spelling of 4891985280 in words is "four billion, eight hundred ninety-one million, nine hundred eighty-five thousand, two hundred eighty".