1381048528 has 20 divisors (see below), whose sum is σ = 2678336388. Its totient is φ = 689864960.

The previous prime is 1381048519. The next prime is 1381048561. The reversal of 1381048528 is 8258401831.

It can be written as a sum of positive squares in 2 ways, for example, as 1000330384 + 380718144 = 31628^2 + 19512^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23701 + ... + 57652.

Almost surely, 2^1381048528 is an apocalyptic number.

It is an amenable number.

1381048528 is a deficient number, since it is larger than the sum of its proper divisors (1297287860).

1381048528 is a wasteful number, since it uses less digits than its factorization.

1381048528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82422 (or 82416 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 40.

The square root of 1381048528 is about 37162.4612747864. The cubic root of 1381048528 is about 1113.6181821813.

The spelling of 1381048528 in words is "one billion, three hundred eighty-one million, forty-eight thousand, five hundred twenty-eight".