1248847641 has 12 divisors (see below), whose sum is σ = 1808732068. Its totient is φ = 830330784.

The previous prime is 1248847627. The next prime is 1248847687. The reversal of 1248847641 is 1467488421.

It can be written as a sum of positive squares in 2 ways, for example, as 643687641 + 605160000 = 25371^2 + 24600^2 .

It is not a de Polignac number, because 1248847641 - 2¹¹ = 1248845593 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1248847241) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 182650 + ... + 189363.

Almost surely, 2^1248847641 is an apocalyptic number.

It is an amenable number.

1248847641 is a deficient number, since it is larger than the sum of its proper divisors (559884427).

1248847641 is a wasteful number, since it uses less digits than its factorization.

1248847641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 372392 (or 372389 counting only the distinct ones).

The product of its digits is 344064, while the sum is 45.

The square root of 1248847641 is about 35339.0384843731. The cubic root of 1248847641 is about 1076.8862189475.

The spelling of 1248847641 in words is "one billion, two hundred forty-eight million, eight hundred forty-seven thousand, six hundred forty-one".