1381746848 has 24 divisors (see below), whose sum is σ = 2736049428. Its totient is φ = 686877184.

The previous prime is 1381746809. The next prime is 1381746853. The reversal of 1381746848 is 8486471831.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1155184144 + 226562704 = 33988^2 + 15052^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1381746796 and 1381746805.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 119261 + ... + 130332.

Almost surely, 2^1381746848 is an apocalyptic number.

It is an amenable number.

1381746848 is a deficient number, since it is larger than the sum of its proper divisors (1354302580).

1381746848 is a wasteful number, since it uses less digits than its factorization.

1381746848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249776 (or 249768 counting only the distinct ones).

The product of its digits is 1032192, while the sum is 50.

The square root of 1381746848 is about 37171.8555899487. The cubic root of 1381746848 is about 1113.8058489664.

The spelling of 1381746848 in words is "one billion, three hundred eighty-one million, seven hundred forty-six thousand, eight hundred forty-eight".