1248844849 has 16 divisors (see below), whose sum is σ = 1461731328. Its totient is φ = 1044707472.

The previous prime is 1248844843. The next prime is 1248844913. The reversal of 1248844849 is 9484488421.

It is a cyclic number.

It is not a de Polignac number, because 1248844849 - 2²⁷ = 1114627121 is a prime.

It is a super-2 number, since 2×1248844849² = 3119226913747665602, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1248844796 and 1248844805.

It is not an unprimeable number, because it can be changed into a prime (1248844843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 115572 + ... + 125914.

It is an arithmetic number, because the mean of its divisors is an integer number (91358208).

Almost surely, 2^1248844849 is an apocalyptic number.

It is an amenable number.

1248844849 is a deficient number, since it is larger than the sum of its proper divisors (212886479).

1248844849 is a wasteful number, since it uses less digits than its factorization.

1248844849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10764.

The product of its digits is 2359296, while the sum is 52.

The square root of 1248844849 is about 35338.9989812954. The cubic root of 1248844849 is about 1076.8854164293.

The spelling of 1248844849 in words is "one billion, two hundred forty-eight million, eight hundred forty-four thousand, eight hundred forty-nine".