4929869981 has 2 divisors, whose sum is σ = 4929869982. Its totient is φ = 4929869980.

The previous prime is 4929869929. The next prime is 4929870041. The reversal of 4929869981 is 1899689294.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4394364100 + 535505881 = 66290^2 + 23141^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4929869981 is a prime.

It is a super-2 number, since 2×4929869981² = 48607236059129880722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4929869911) 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 as a sum of consecutive naturals, namely, 2464934990 + 2464934991.

It is an arithmetic number, because the mean of its divisors is an integer number (2464934991).

Almost surely, 2^4929869981 is an apocalyptic number.

It is an amenable number.

4929869981 is a deficient number, since it is larger than the sum of its proper divisors (1).

4929869981 is an equidigital number, since it uses as much as digits as its factorization.

4929869981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20155392, while the sum is 65.

The square root of 4929869981 is about 70213.0328429131. The cubic root of 4929869981 is about 1701.9435650160.

The spelling of 4929869981 in words is "four billion, nine hundred twenty-nine million, eight hundred sixty-nine thousand, nine hundred eighty-one".