1148643841 has 4 divisors (see below), whose sum is σ = 1209098800. Its totient is φ = 1088188884.

The previous prime is 1148643827. The next prime is 1148643887. The reversal of 1148643841 is 1483468411.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1148643841 - 2⁵ = 1148643809 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1148643794 and 1148643803.

It is not an unprimeable number, because it can be changed into a prime (1148643241) 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, 30227451 + ... + 30227488.

It is an arithmetic number, because the mean of its divisors is an integer number (302274700).

Almost surely, 2^1148643841 is an apocalyptic number.

It is an amenable number.

1148643841 is a deficient number, since it is larger than the sum of its proper divisors (60454959).

1148643841 is an equidigital number, since it uses as much as digits as its factorization.

1148643841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60454958.

The product of its digits is 73728, while the sum is 40.

The square root of 1148643841 is about 33891.6485435572. The cubic root of 1148643841 is about 1047.2775553462.

The spelling of 1148643841 in words is "one billion, one hundred forty-eight million, six hundred forty-three thousand, eight hundred forty-one".