1276680413 has 4 divisors (see below), whose sum is σ = 1277856000. Its totient is φ = 1275504828.

The previous prime is 1276680373. The next prime is 1276680437. The reversal of 1276680413 is 3140866721.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1276680413 - 2⁸ = 1276680157 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1276683413) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 586163 + ... + 588336.

It is an arithmetic number, because the mean of its divisors is an integer number (319464000).

Almost surely, 2^1276680413 is an apocalyptic number.

It is an amenable number.

1276680413 is a deficient number, since it is larger than the sum of its proper divisors (1175587).

1276680413 is a wasteful number, since it uses less digits than its factorization.

1276680413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1175586.

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 1276680413 is about 35730.6648832624. The cubic root of 1276680413 is about 1084.8276147373.

The spelling of 1276680413 in words is "one billion, two hundred seventy-six million, six hundred eighty thousand, four hundred thirteen".