1280676461 has 2 divisors, whose sum is σ = 1280676462. Its totient is φ = 1280676460.

The previous prime is 1280676457. The next prime is 1280676469. The reversal of 1280676461 is 1646760821.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1266007561 + 14668900 = 35581^2 + 3830^2 .

It is an emirp because it is prime and its reverse (1646760821) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1280676461 - 2² = 1280676457 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1280676469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 640338230 + 640338231.

It is an arithmetic number, because the mean of its divisors is an integer number (640338231).

Almost surely, 2^1280676461 is an apocalyptic number.

It is an amenable number.

1280676461 is a deficient number, since it is larger than the sum of its proper divisors (1).

1280676461 is an equidigital number, since it uses as much as digits as its factorization.

1280676461 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96768, while the sum is 41.

The square root of 1280676461 is about 35786.5402211502. The cubic root of 1280676461 is about 1085.9582835424.

The spelling of 1280676461 in words is "one billion, two hundred eighty million, six hundred seventy-six thousand, four hundred sixty-one".