1278952603 has 2 divisors, whose sum is σ = 1278952604. Its totient is φ = 1278952602.

The previous prime is 1278952601. The next prime is 1278952613. The reversal of 1278952603 is 3062598721.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1278952603 - 2¹ = 1278952601 is a prime.

Together with 1278952601, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1278952603.

It is not a weakly prime, because it can be changed into another prime (1278952601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 639476301 + 639476302.

It is an arithmetic number, because the mean of its divisors is an integer number (639476302).

Almost surely, 2^1278952603 is an apocalyptic number.

1278952603 is a deficient number, since it is larger than the sum of its proper divisors (1).

1278952603 is an equidigital number, since it uses as much as digits as its factorization.

1278952603 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 181440, while the sum is 43.

The square root of 1278952603 is about 35762.4468262450. The cubic root of 1278952603 is about 1085.4708123987.

The spelling of 1278952603 in words is "one billion, two hundred seventy-eight million, nine hundred fifty-two thousand, six hundred three".