4881605981 has 16 divisors (see below), whose sum is σ = 5921942400. Its totient is φ = 3928243200.

The previous prime is 4881605977. The next prime is 4881605983. The reversal of 4881605981 is 1895061884.

It is not a de Polignac number, because 4881605981 - 2² = 4881605977 is a prime.

It is a super-2 number, since 2×4881605981² = 47660153907469944722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4881605983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3431 + ... + 98868.

It is an arithmetic number, because the mean of its divisors is an integer number (370121400).

Almost surely, 2^4881605981 is an apocalyptic number.

It is an amenable number.

4881605981 is a deficient number, since it is larger than the sum of its proper divisors (1040336419).

4881605981 is a wasteful number, since it uses less digits than its factorization.

4881605981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102724.

The product of its (nonzero) digits is 552960, while the sum is 50.

The square root of 4881605981 is about 69868.4906163000. The cubic root of 4881605981 is about 1696.3712656802.

The spelling of 4881605981 in words is "four billion, eight hundred eighty-one million, six hundred five thousand, nine hundred eighty-one".