1278953063 has 4 divisors (see below), whose sum is σ = 1313519400. Its totient is φ = 1244386728.

The previous prime is 1278953029. The next prime is 1278953083. The reversal of 1278953063 is 3603598721.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3603598721 = 2473 ⋅1457177.

It is a cyclic number.

It is not a de Polignac number, because 1278953063 - 2²⁴ = 1262175847 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1278953003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17283113 + ... + 17283186.

It is an arithmetic number, because the mean of its divisors is an integer number (328379850).

Almost surely, 2^1278953063 is an apocalyptic number.

1278953063 is a deficient number, since it is larger than the sum of its proper divisors (34566337).

1278953063 is an equidigital number, since it uses as much as digits as its factorization.

1278953063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34566336.

The product of its (nonzero) digits is 272160, while the sum is 44.

The square root of 1278953063 is about 35762.4532575717. The cubic root of 1278953063 is about 1085.4709425356.

The spelling of 1278953063 in words is "one billion, two hundred seventy-eight million, nine hundred fifty-three thousand, sixty-three".