1268787467 has 2 divisors, whose sum is σ = 1268787468. Its totient is φ = 1268787466.

The previous prime is 1268787379. The next prime is 1268787539. The reversal of 1268787467 is 7647878621.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1268787467 - 2²⁰ = 1267738891 is a prime.

It is not a weakly prime, because it can be changed into another prime (1268787167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 634393733 + 634393734.

It is an arithmetic number, because the mean of its divisors is an integer number (634393734).

Almost surely, 2^1268787467 is an apocalyptic number.

1268787467 is a deficient number, since it is larger than the sum of its proper divisors (1).

1268787467 is an equidigital number, since it uses as much as digits as its factorization.

1268787467 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6322176, while the sum is 56.

The square root of 1268787467 is about 35620.0430516304. The cubic root of 1268787467 is about 1082.5873797976.

The spelling of 1268787467 in words is "one billion, two hundred sixty-eight million, seven hundred eighty-seven thousand, four hundred sixty-seven".