1284851291 has 2 divisors, whose sum is σ = 1284851292. Its totient is φ = 1284851290.

The previous prime is 1284851273. The next prime is 1284851329. The reversal of 1284851291 is 1921584821.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1284851291 - 2¹⁸ = 1284589147 is a prime.

It is not a weakly prime, because it can be changed into another prime (1284850291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 642425645 + 642425646.

It is an arithmetic number, because the mean of its divisors is an integer number (642425646).

Almost surely, 2^1284851291 is an apocalyptic number.

1284851291 is a deficient number, since it is larger than the sum of its proper divisors (1).

1284851291 is an equidigital number, since it uses as much as digits as its factorization.

1284851291 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 46080, while the sum is 41.

The square root of 1284851291 is about 35844.8223736706. The cubic root of 1284851291 is about 1087.1370287491.

The spelling of 1284851291 in words is "one billion, two hundred eighty-four million, eight hundred fifty-one thousand, two hundred ninety-one".