1548368641 has 2 divisors, whose sum is σ = 1548368642. Its totient is φ = 1548368640.

The previous prime is 1548368629. The next prime is 1548368693. The reversal of 1548368641 is 1468638451.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1390991616 + 157377025 = 37296^2 + 12545^2 .

It is a cyclic number.

It is not a de Polignac number, because 1548368641 - 2¹¹ = 1548366593 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1548368591 and 1548368600.

It is not a weakly prime, because it can be changed into another prime (1548368621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 774184320 + 774184321.

It is an arithmetic number, because the mean of its divisors is an integer number (774184321).

Almost surely, 2^1548368641 is an apocalyptic number.

It is an amenable number.

1548368641 is a deficient number, since it is larger than the sum of its proper divisors (1).

1548368641 is an equidigital number, since it uses as much as digits as its factorization.

1548368641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 552960, while the sum is 46.

The square root of 1548368641 is about 39349.3156357261. The cubic root of 1548368641 is about 1156.8883712234. Note that the first 3 decimals are identical.

The spelling of 1548368641 in words is "one billion, five hundred forty-eight million, three hundred sixty-eight thousand, six hundred forty-one".