1548665485 has 4 divisors (see below), whose sum is σ = 1858398588. Its totient is φ = 1238932384.

The previous prime is 1548665483. The next prime is 1548665497. The reversal of 1548665485 is 5845668451.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5845668451 = 7 ⋅835095493.

It can be written as a sum of positive squares in 2 ways, for example, as 187498249 + 1361167236 = 13693^2 + 36894^2 .

It is a cyclic number.

It is not a de Polignac number, because 1548665485 - 2¹ = 1548665483 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1548665483) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 154866544 + ... + 154866553.

It is an arithmetic number, because the mean of its divisors is an integer number (464599647).

Almost surely, 2^1548665485 is an apocalyptic number.

It is an amenable number.

1548665485 is a deficient number, since it is larger than the sum of its proper divisors (309733103).

1548665485 is an equidigital number, since it uses as much as digits as its factorization.

1548665485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309733102.

The product of its digits is 4608000, while the sum is 52.

The square root of 1548665485 is about 39353.0873630011. The cubic root of 1548665485 is about 1156.9622970786.

The spelling of 1548665485 in words is "one billion, five hundred forty-eight million, six hundred sixty-five thousand, four hundred eighty-five".