4934999981 has 2 divisors, whose sum is σ = 4934999982. Its totient is φ = 4934999980.

The previous prime is 4934999897. The next prime is 4935000001. The reversal of 4934999981 is 1899994394.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4909244356 + 25755625 = 70066^2 + 5075^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4934999981 is a prime.

It is a super-2 number, since 2×4934999981² = 48708449624940000722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4934992981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2467499990 + 2467499991.

It is an arithmetic number, because the mean of its divisors is an integer number (2467499991).

Almost surely, 2^4934999981 is an apocalyptic number.

It is an amenable number.

4934999981 is a deficient number, since it is larger than the sum of its proper divisors (1).

4934999981 is an equidigital number, since it uses as much as digits as its factorization.

4934999981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22674816, while the sum is 65.

The square root of 4934999981 is about 70249.5550235018. Note that the first 3 decimals coincide. The cubic root of 4934999981 is about 1702.5337052430.

The spelling of 4934999981 in words is "four billion, nine hundred thirty-four million, nine hundred ninety-nine thousand, nine hundred eighty-one".