4919268181 has 2 divisors, whose sum is σ = 4919268182. Its totient is φ = 4919268180.

The previous prime is 4919268163. The next prime is 4919268229. The reversal of 4919268181 is 1818629194.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4552200900 + 367067281 = 67470^2 + 19159^2 .

It is a cyclic number.

It is not a de Polignac number, because 4919268181 - 2⁵ = 4919268149 is a prime.

It is a super-2 number, since 2×4919268181² = 48398398873198097522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4919268281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2459634090 + 2459634091.

It is an arithmetic number, because the mean of its divisors is an integer number (2459634091).

Almost surely, 2^4919268181 is an apocalyptic number.

It is an amenable number.

4919268181 is a deficient number, since it is larger than the sum of its proper divisors (1).

4919268181 is an equidigital number, since it uses as much as digits as its factorization.

4919268181 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 248832, while the sum is 49.

The square root of 4919268181 is about 70137.4948297984. The cubic root of 4919268181 is about 1700.7226663396.

The spelling of 4919268181 in words is "four billion, nine hundred nineteen million, two hundred sixty-eight thousand, one hundred eighty-one".