1268717413 has 2 divisors, whose sum is σ = 1268717414. Its totient is φ = 1268717412.

The previous prime is 1268717393. The next prime is 1268717431. The reversal of 1268717413 is 3147178621.

It is a happy number.

Together with next prime (1268717431) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 883694529 + 385022884 = 29727^2 + 19622^2 .

It is a cyclic number.

It is not a de Polignac number, because 1268717413 - 2²¹ = 1266620261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1268717473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 634358706 + 634358707.

It is an arithmetic number, because the mean of its divisors is an integer number (634358707).

Almost surely, 2^1268717413 is an apocalyptic number.

It is an amenable number.

1268717413 is a deficient number, since it is larger than the sum of its proper divisors (1).

1268717413 is an equidigital number, since it uses as much as digits as its factorization.

1268717413 is an evil number, because the sum of its binary digits is even.

The product of its digits is 56448, while the sum is 40.

The square root of 1268717413 is about 35619.0596871956. The cubic root of 1268717413 is about 1082.5674550075.

The spelling of 1268717413 in words is "one billion, two hundred sixty-eight million, seven hundred seventeen thousand, four hundred thirteen".