4181288549 has 2 divisors, whose sum is σ = 4181288550. Its totient is φ = 4181288548.

The previous prime is 4181288491. The next prime is 4181288623. The reversal of 4181288549 is 9458821814.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2471879524 + 1709409025 = 49718^2 + 41345^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4181288549 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4181288497 and 4181288506.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4181281549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2090644274 + 2090644275.

It is an arithmetic number, because the mean of its divisors is an integer number (2090644275).

Almost surely, 2^4181288549 is an apocalyptic number.

It is an amenable number.

4181288549 is a deficient number, since it is larger than the sum of its proper divisors (1).

4181288549 is an equidigital number, since it uses as much as digits as its factorization.

4181288549 is an evil number, because the sum of its binary digits is even.

The product of its digits is 737280, while the sum is 50.

The square root of 4181288549 is about 64662.8838592898. The cubic root of 4181288549 is about 1611.0290797571.

The spelling of 4181288549 in words is "four billion, one hundred eighty-one million, two hundred eighty-eight thousand, five hundred forty-nine".