4549867991 has 2 divisors, whose sum is σ = 4549867992. Its totient is φ = 4549867990.

The previous prime is 4549867967. The next prime is 4549867997. The reversal of 4549867991 is 1997689454.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4549867991 - 2¹⁸ = 4549605847 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4549867997) 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, 2274933995 + 2274933996.

It is an arithmetic number, because the mean of its divisors is an integer number (2274933996).

Almost surely, 2^4549867991 is an apocalyptic number.

4549867991 is a deficient number, since it is larger than the sum of its proper divisors (1).

4549867991 is an equidigital number, since it uses as much as digits as its factorization.

4549867991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 19595520, while the sum is 62.

The square root of 4549867991 is about 67452.7092932523. The cubic root of 4549867991 is about 1657.0397708201.

The spelling of 4549867991 in words is "four billion, five hundred forty-nine million, eight hundred sixty-seven thousand, nine hundred ninety-one".