1279283651 has 2 divisors, whose sum is σ = 1279283652. Its totient is φ = 1279283650.

The previous prime is 1279283633. The next prime is 1279283657. The reversal of 1279283651 is 1563829721.

It is a strong prime.

It is an emirp because it is prime and its reverse (1563829721) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1279283651 is a prime.

It is not a weakly prime, because it can be changed into another prime (1279283657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 639641825 + 639641826.

It is an arithmetic number, because the mean of its divisors is an integer number (639641826).

Almost surely, 2^1279283651 is an apocalyptic number.

1279283651 is a deficient number, since it is larger than the sum of its proper divisors (1).

1279283651 is an equidigital number, since it uses as much as digits as its factorization.

1279283651 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 181440, while the sum is 44.

The square root of 1279283651 is about 35767.0749572844. The cubic root of 1279283651 is about 1085.5644598466.

The spelling of 1279283651 in words is "one billion, two hundred seventy-nine million, two hundred eighty-three thousand, six hundred fifty-one".