1561158048 has 24 divisors (see below), whose sum is σ = 4098040128. Its totient is φ = 520385984.

The previous prime is 1561158037. The next prime is 1561158077. The reversal of 1561158048 is 8408511651.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Smith number, since the sum of its digits (39) 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 = 1561157997 and 1561158015.

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, 8130936 + ... + 8131127.

It is an arithmetic number, because the mean of its divisors is an integer number (170751672).

Almost surely, 2^1561158048 is an apocalyptic number.

It is an amenable number.

1561158048 is an abundant number, since it is smaller than the sum of its proper divisors (2536882080).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1561158048 is a wasteful number, since it uses less digits than its factorization.

1561158048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16262076 (or 16262068 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 39.

The square root of 1561158048 is about 39511.4926065822. The cubic root of 1561158048 is about 1160.0649111516.

Adding to 1561158048 its reverse (8408511651), we get a palindrome (9969669699).

The spelling of 1561158048 in words is "one billion, five hundred sixty-one million, one hundred fifty-eight thousand, forty-eight".