1278953003 has 2 divisors, whose sum is σ = 1278953004. Its totient is φ = 1278953002.

The previous prime is 1278952903. The next prime is 1278953029. The reversal of 1278953003 is 3003598721.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1278953003 - 2⁸ = 1278952747 is a prime.

It is not a weakly prime, because it can be changed into another prime (1278953083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 639476501 + 639476502.

It is an arithmetic number, because the mean of its divisors is an integer number (639476502).

Almost surely, 2^1278953003 is an apocalyptic number.

1278953003 is a deficient number, since it is larger than the sum of its proper divisors (1).

1278953003 is an equidigital number, since it uses as much as digits as its factorization.

1278953003 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45360, while the sum is 38.

The square root of 1278953003 is about 35762.4524187031. The cubic root of 1278953003 is about 1085.4709255612.

The spelling of 1278953003 in words is "one billion, two hundred seventy-eight million, nine hundred fifty-three thousand, three".