4990271261 has 2 divisors, whose sum is σ = 4990271262. Its totient is φ = 4990271260.

The previous prime is 4990271249. The next prime is 4990271269. The reversal of 4990271261 is 1621720994.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2966980900 + 2023290361 = 54470^2 + 44981^2 .

It is a cyclic number.

It is not a de Polignac number, because 4990271261 - 2¹⁸ = 4990009117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4990271269) 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, 2495135630 + 2495135631.

It is an arithmetic number, because the mean of its divisors is an integer number (2495135631).

Almost surely, 2^4990271261 is an apocalyptic number.

It is an amenable number.

4990271261 is a deficient number, since it is larger than the sum of its proper divisors (1).

4990271261 is an equidigital number, since it uses as much as digits as its factorization.

4990271261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 4990271261 is about 70641.8520496172. The cubic root of 4990271261 is about 1708.8661659353.

The spelling of 4990271261 in words is "four billion, nine hundred ninety million, two hundred seventy-one thousand, two hundred sixty-one".