1148209841 has 6 divisors (see below), whose sum is σ = 1200303090. Its totient is φ = 1098287168.

The previous prime is 1148209819. The next prime is 1148209849. The reversal of 1148209841 is 1489028411.

It can be written as a sum of positive squares in only one way, i.e., 931531441 + 216678400 = 30521^2 + 14720^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1148209841 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1148209795 and 1148209804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1148209849) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1084736 + ... + 1085793.

It is an arithmetic number, because the mean of its divisors is an integer number (200050515).

Almost surely, 2^1148209841 is an apocalyptic number.

It is an amenable number.

1148209841 is a deficient number, since it is larger than the sum of its proper divisors (52093249).

1148209841 is an equidigital number, since it uses as much as digits as its factorization.

1148209841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2170575 (or 2170552 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 38.

The square root of 1148209841 is about 33885.2451813470. The cubic root of 1148209841 is about 1047.1456387040.

The spelling of 1148209841 in words is "one billion, one hundred forty-eight million, two hundred nine thousand, eight hundred forty-one".