1287274367 has 2 divisors, whose sum is σ = 1287274368. Its totient is φ = 1287274366.

The previous prime is 1287274337. The next prime is 1287274369. The reversal of 1287274367 is 7634727821.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1287274367 - 2²⁰ = 1286225791 is a prime.

Together with 1287274369, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1287274369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 643637183 + 643637184.

It is an arithmetic number, because the mean of its divisors is an integer number (643637184).

Almost surely, 2^1287274367 is an apocalyptic number.

1287274367 is a deficient number, since it is larger than the sum of its proper divisors (1).

1287274367 is an equidigital number, since it uses as much as digits as its factorization.

1287274367 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 790272, while the sum is 47.

The square root of 1287274367 is about 35878.6059790511. The cubic root of 1287274367 is about 1087.8200031020.

The spelling of 1287274367 in words is "one billion, two hundred eighty-seven million, two hundred seventy-four thousand, three hundred sixty-seven".