4921558840 has 128 divisors (see below), whose sum is σ = 12318505920. Its totient is φ = 1769349120.

The previous prime is 4921558813. The next prime is 4921558849. The reversal of 4921558840 is 488551294.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4921558849) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5163804 + ... + 5164756.

Almost surely, 2^4921558840 is an apocalyptic number.

4921558840 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 4921558840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6159252960).

4921558840 is an abundant number, since it is smaller than the sum of its proper divisors (7396947080).

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

4921558840 is a wasteful number, since it uses less digits than its factorization.

4921558840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1094 (or 1068 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 46.

The square root of 4921558840 is about 70153.8227041121. The cubic root of 4921558840 is about 1700.9866060834.

The spelling of 4921558840 in words is "four billion, nine hundred twenty-one million, five hundred fifty-eight thousand, eight hundred forty".