1273053647 has 2 divisors, whose sum is σ = 1273053648. Its totient is φ = 1273053646.

The previous prime is 1273053589. The next prime is 1273053659. The reversal of 1273053647 is 7463503721.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1273053647 - 2¹⁰ = 1273052623 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1273053647.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1273053697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 636526823 + 636526824.

It is an arithmetic number, because the mean of its divisors is an integer number (636526824).

Almost surely, 2^1273053647 is an apocalyptic number.

1273053647 is a deficient number, since it is larger than the sum of its proper divisors (1).

1273053647 is an equidigital number, since it uses as much as digits as its factorization.

1273053647 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 105840, while the sum is 38.

The square root of 1273053647 is about 35679.8773400358. The cubic root of 1273053647 is about 1083.7993888892.

The spelling of 1273053647 in words is "one billion, two hundred seventy-three million, fifty-three thousand, six hundred forty-seven".