1280316495 has 64 divisors (see below), whose sum is σ = 2247606144. Its totient is φ = 619806720.

The previous prime is 1280316491. The next prime is 1280316509. The reversal of 1280316495 is 5946130821.

It is not a de Polignac number, because 1280316495 - 2² = 1280316491 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1280316491) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 823639 + ... + 825191.

It is an arithmetic number, because the mean of its divisors is an integer number (35118846).

Almost surely, 2^1280316495 is an apocalyptic number.

1280316495 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1280316495 is a deficient number, since it is larger than the sum of its proper divisors (967289649).

1280316495 is a wasteful number, since it uses less digits than its factorization.

1280316495 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1692.

The product of its (nonzero) digits is 51840, while the sum is 39.

The square root of 1280316495 is about 35781.5105187023. The cubic root of 1280316495 is about 1085.8565288052.

The spelling of 1280316495 in words is "one billion, two hundred eighty million, three hundred sixteen thousand, four hundred ninety-five".