1148560643 has 4 divisors (see below), whose sum is σ = 1167389568. Its totient is φ = 1129731720.

The previous prime is 1148560639. The next prime is 1148560649. The reversal of 1148560643 is 3460658411.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1148560643 - 2² = 1148560639 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1148560597 and 1148560606.

It is not an unprimeable number, because it can be changed into a prime (1148560649) by changing a digit.

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, 9414371 + ... + 9414492.

It is an arithmetic number, because the mean of its divisors is an integer number (291847392).

Almost surely, 2^1148560643 is an apocalyptic number.

1148560643 is a deficient number, since it is larger than the sum of its proper divisors (18828925).

1148560643 is an equidigital number, since it uses as much as digits as its factorization.

1148560643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18828924.

The product of its (nonzero) digits is 69120, while the sum is 38.

The square root of 1148560643 is about 33890.4211098062. The cubic root of 1148560643 is about 1047.2522694398.

The spelling of 1148560643 in words is "one billion, one hundred forty-eight million, five hundred sixty thousand, six hundred forty-three".