1281144848 has 10 divisors (see below), whose sum is σ = 2482218174. Its totient is φ = 640572416.

The previous prime is 1281144841. The next prime is 1281144857. The reversal of 1281144848 is 8484411821.

It can be written as a sum of positive squares in only one way, i.e., 1229764624 + 51380224 = 35068^2 + 7168^2 .

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (1281144841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40035761 + ... + 40035792.

Almost surely, 2^1281144848 is an apocalyptic number.

It is an amenable number.

1281144848 is a deficient number, since it is larger than the sum of its proper divisors (1201073326).

1281144848 is an equidigital number, since it uses as much as digits as its factorization.

1281144848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80071561 (or 80071555 counting only the distinct ones).

The product of its digits is 65536, while the sum is 41.

The square root of 1281144848 is about 35793.0838012038. The cubic root of 1281144848 is about 1086.0906580493.

The spelling of 1281144848 in words is "one billion, two hundred eighty-one million, one hundred forty-four thousand, eight hundred forty-eight".