1278433283 has 2 divisors, whose sum is σ = 1278433284. Its totient is φ = 1278433282.

The previous prime is 1278433243. The next prime is 1278433319. The reversal of 1278433283 is 3823348721.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1278433283 - 2¹⁴ = 1278416899 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1278433283.

It is not a weakly prime, because it can be changed into another prime (1278433223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 639216641 + 639216642.

It is an arithmetic number, because the mean of its divisors is an integer number (639216642).

Almost surely, 2^1278433283 is an apocalyptic number.

1278433283 is a deficient number, since it is larger than the sum of its proper divisors (1).

1278433283 is an equidigital number, since it uses as much as digits as its factorization.

1278433283 is an evil number, because the sum of its binary digits is even.

The product of its digits is 193536, while the sum is 41.

The square root of 1278433283 is about 35755.1854001626. The cubic root of 1278433283 is about 1085.3238736678.

The spelling of 1278433283 in words is "one billion, two hundred seventy-eight million, four hundred thirty-three thousand, two hundred eighty-three".