1148863249 has 4 divisors (see below), whose sum is σ = 1148932336. Its totient is φ = 1148794164.

The previous prime is 1148863241. The next prime is 1148863277. The reversal of 1148863249 is 9423688411.

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, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 9423688411 = 5557 ⋅1695823.

It is a cyclic number.

It is not a de Polignac number, because 1148863249 - 2³ = 1148863241 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1148863199 and 1148863208.

It is not an unprimeable number, because it can be changed into a prime (1148863241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7282 + ... + 48484.

It is an arithmetic number, because the mean of its divisors is an integer number (287233084).

Almost surely, 2^1148863249 is an apocalyptic number.

It is an amenable number.

1148863249 is a deficient number, since it is larger than the sum of its proper divisors (69087).

1148863249 is an equidigital number, since it uses as much as digits as its factorization.

1148863249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69086.

The product of its digits is 331776, while the sum is 46.

The square root of 1148863249 is about 33894.8852926220. The cubic root of 1148863249 is about 1047.3442329465.

The spelling of 1148863249 in words is "one billion, one hundred forty-eight million, eight hundred sixty-three thousand, two hundred forty-nine".