1581248048 has 20 divisors (see below), whose sum is σ = 3098094120. Its totient is φ = 781739904.

The previous prime is 1581247973. The next prime is 1581248087. The reversal of 1581248048 is 8408421851.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 1581247996 and 1581248014.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 553790 + ... + 556637.

It is an arithmetic number, because the mean of its divisors is an integer number (154904706).

Almost surely, 2^1581248048 is an apocalyptic number.

It is an amenable number.

1581248048 is a deficient number, since it is larger than the sum of its proper divisors (1516846072).

1581248048 is a wasteful number, since it uses less digits than its factorization.

1581248048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1110524 (or 1110518 counting only the distinct ones).

The product of its (nonzero) digits is 81920, while the sum is 41.

The square root of 1581248048 is about 39764.9097572219. The cubic root of 1581248048 is about 1165.0198742826.

Adding to 1581248048 its reverse (8408421851), we get a palindrome (9989669899).

The spelling of 1581248048 in words is "one billion, five hundred eighty-one million, two hundred forty-eight thousand, forty-eight".