1287274337 has 2 divisors, whose sum is σ = 1287274338. Its totient is φ = 1287274336.

The previous prime is 1287274321. The next prime is 1287274367. The reversal of 1287274337 is 7334727821.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 792478801 + 494795536 = 28151^2 + 22244^2 .

It is a cyclic number.

It is not a de Polignac number, because 1287274337 - 2⁴ = 1287274321 is a prime.

It is not a weakly prime, because it can be changed into another prime (1287274367) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 643637168 + 643637169.

It is an arithmetic number, because the mean of its divisors is an integer number (643637169).

Almost surely, 2^1287274337 is an apocalyptic number.

It is an amenable number.

1287274337 is a deficient number, since it is larger than the sum of its proper divisors (1).

1287274337 is an equidigital number, since it uses as much as digits as its factorization.

1287274337 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 395136, while the sum is 44.

The square root of 1287274337 is about 35878.6055609746. The cubic root of 1287274337 is about 1087.8199946514.

The spelling of 1287274337 in words is "one billion, two hundred eighty-seven million, two hundred seventy-four thousand, three hundred thirty-seven".