1278482299 has 2 divisors, whose sum is σ = 1278482300. Its totient is φ = 1278482298.

The previous prime is 1278482251. The next prime is 1278482311. The reversal of 1278482299 is 9922848721.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1278482299 - 2⁷ = 1278482171 is a prime.

It is not a weakly prime, because it can be changed into another prime (1278482099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 639241149 + 639241150.

It is an arithmetic number, because the mean of its divisors is an integer number (639241150).

Almost surely, 2^1278482299 is an apocalyptic number.

1278482299 is a deficient number, since it is larger than the sum of its proper divisors (1).

1278482299 is an equidigital number, since it uses as much as digits as its factorization.

1278482299 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1161216, while the sum is 52.

The square root of 1278482299 is about 35755.8708326339. The cubic root of 1278482299 is about 1085.3377441752.

The spelling of 1278482299 in words is "one billion, two hundred seventy-eight million, four hundred eighty-two thousand, two hundred ninety-nine".