1280348849 has 16 divisors (see below), whose sum is σ = 1393029120. Its totient is φ = 1169743680.

The previous prime is 1280348833. The next prime is 1280348903. The reversal of 1280348849 is 9488430821.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1280348849 - 2⁴ = 1280348833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1280348819) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1041167 + ... + 1042395.

It is an arithmetic number, because the mean of its divisors is an integer number (87064320).

Almost surely, 2^1280348849 is an apocalyptic number.

It is an amenable number.

1280348849 is a deficient number, since it is larger than the sum of its proper divisors (112680271).

1280348849 is a wasteful number, since it uses less digits than its factorization.

1280348849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2000.

The product of its (nonzero) digits is 442368, while the sum is 47.

The square root of 1280348849 is about 35781.9626208513. The cubic root of 1280348849 is about 1085.8656753734.

The spelling of 1280348849 in words is "one billion, two hundred eighty million, three hundred forty-eight thousand, eight hundred forty-nine".