4944929581 has 2 divisors, whose sum is σ = 4944929582. Its totient is φ = 4944929580.

The previous prime is 4944929557. The next prime is 4944929641. The reversal of 4944929581 is 1859294494.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4669535556 + 275394025 = 68334^2 + 16595^2 .

It is a cyclic number.

It is not a de Polignac number, because 4944929581 - 2⁹ = 4944929069 is a prime.

It is a super-2 number, since 2×4944929581² = 48904657122097671122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4944929981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2472464790 + 2472464791.

It is an arithmetic number, because the mean of its divisors is an integer number (2472464791).

Almost surely, 2^4944929581 is an apocalyptic number.

It is an amenable number.

4944929581 is a deficient number, since it is larger than the sum of its proper divisors (1).

4944929581 is an equidigital number, since it uses as much as digits as its factorization.

4944929581 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3732480, while the sum is 55.

The square root of 4944929581 is about 70320.1932662304. The cubic root of 4944929581 is about 1703.6748165586.

The spelling of 4944929581 in words is "four billion, nine hundred forty-four million, nine hundred twenty-nine thousand, five hundred eighty-one".