1280495953 has 16 divisors (see below), whose sum is σ = 1425335616. Its totient is φ = 1140459840.

The previous prime is 1280495929. The next prime is 1280495959. The reversal of 1280495953 is 3595940821.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1280495953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1280495959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 580150 + ... + 582352.

It is an arithmetic number, because the mean of its divisors is an integer number (89083476).

Almost surely, 2^1280495953 is an apocalyptic number.

It is an amenable number.

1280495953 is a deficient number, since it is larger than the sum of its proper divisors (144839663).

1280495953 is a wasteful number, since it uses less digits than its factorization.

1280495953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3264.

The product of its (nonzero) digits is 388800, while the sum is 46.

The square root of 1280495953 is about 35784.0181226200. The cubic root of 1280495953 is about 1085.9072601512.

The spelling of 1280495953 in words is "one billion, two hundred eighty million, four hundred ninety-five thousand, nine hundred fifty-three".