1548422881 has 2 divisors, whose sum is σ = 1548422882. Its totient is φ = 1548422880.

The previous prime is 1548422873. The next prime is 1548422899. The reversal of 1548422881 is 1882248451.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1458552481 + 89870400 = 38191^2 + 9480^2 .

It is a cyclic number.

It is not a de Polignac number, because 1548422881 - 2³ = 1548422873 is a prime.

It is a super-2 number, since 2×1548422881² = 4795226836808680322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1548422861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 774211440 + 774211441.

It is an arithmetic number, because the mean of its divisors is an integer number (774211441).

Almost surely, 2^1548422881 is an apocalyptic number.

It is an amenable number.

1548422881 is a deficient number, since it is larger than the sum of its proper divisors (1).

1548422881 is an equidigital number, since it uses as much as digits as its factorization.

1548422881 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 163840, while the sum is 43.

The square root of 1548422881 is about 39350.0048411687. The cubic root of 1548422881 is about 1156.9018798265.

The spelling of 1548422881 in words is "one billion, five hundred forty-eight million, four hundred twenty-two thousand, eight hundred eighty-one".