1148280561 has 24 divisors (see below), whose sum is σ = 1747299840. Its totient is φ = 724658400.

The previous prime is 1148280499. The next prime is 1148280629. The reversal of 1148280561 is 1650828411.

1148280561 is a `hidden beast` number, since 1 + 14 + 8 + 2 + 80 + 561 = 666.

It is not a de Polignac number, because 1148280561 - 2¹⁰ = 1148279537 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1148280461) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 359391 + ... + 362571.

It is an arithmetic number, because the mean of its divisors is an integer number (72804160).

Almost surely, 2^1148280561 is an apocalyptic number.

It is an amenable number.

1148280561 is a deficient number, since it is larger than the sum of its proper divisors (599019279).

1148280561 is a wasteful number, since it uses less digits than its factorization.

1148280561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5317 (or 5314 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 36.

The square root of 1148280561 is about 33886.2886873142. The cubic root of 1148280561 is about 1047.1671366964.

The spelling of 1148280561 in words is "one billion, one hundred forty-eight million, two hundred eighty thousand, five hundred sixty-one".