7401281549 has 2 divisors, whose sum is σ = 7401281550. Its totient is φ = 7401281548.

The previous prime is 7401281543. The next prime is 7401281567. The reversal of 7401281549 is 9451821047.

7401281549 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6224105449 + 1177176100 = 78893^2 + 34310^2 .

It is a cyclic number.

It is not a de Polignac number, because 7401281549 - 2⁴ = 7401281533 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7401281543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3700640774 + 3700640775.

It is an arithmetic number, because the mean of its divisors is an integer number (3700640775).

Almost surely, 2^7401281549 is an apocalyptic number.

It is an amenable number.

7401281549 is a deficient number, since it is larger than the sum of its proper divisors (1).

7401281549 is an equidigital number, since it uses as much as digits as its factorization.

7401281549 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 80640, while the sum is 41.

The square root of 7401281549 is about 86030.7012002111. The cubic root of 7401281549 is about 1948.8076470495.

The spelling of 7401281549 in words is "seven billion, four hundred one million, two hundred eighty-one thousand, five hundred forty-nine".