1280538497 has 32 divisors (see below), whose sum is σ = 1567641600. Its totient is φ = 1021680000.

The previous prime is 1280538491. The next prime is 1280538503. The reversal of 1280538497 is 7948350821.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1280538491) and next prime (1280538503).

It is a cyclic number.

It is not a de Polignac number, because 1280538497 - 2¹⁶ = 1280472961 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1280538491) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2970872 + ... + 2971302.

It is an arithmetic number, because the mean of its divisors is an integer number (48988800).

Almost surely, 2^1280538497 is an apocalyptic number.

It is an amenable number.

1280538497 is a deficient number, since it is larger than the sum of its proper divisors (287103103).

1280538497 is a wasteful number, since it uses less digits than its factorization.

1280538497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 797.

The product of its (nonzero) digits is 483840, while the sum is 47.

The square root of 1280538497 is about 35784.6125730041. The cubic root of 1280538497 is about 1085.9192863058.

The spelling of 1280538497 in words is "one billion, two hundred eighty million, five hundred thirty-eight thousand, four hundred ninety-seven".