1273317564 has 12 divisors (see below), whose sum is σ = 2971074344. Its totient is φ = 424439184.

The previous prime is 1273317533. The next prime is 1273317569. The reversal of 1273317564 is 4657133721.

1273317564 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1273317569) 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, 53054887 + ... + 53054910.

Almost surely, 2^1273317564 is an apocalyptic number.

It is an amenable number.

1273317564 is an abundant number, since it is smaller than the sum of its proper divisors (1697756780).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1273317564 is a wasteful number, since it uses less digits than its factorization.

1273317564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106109804 (or 106109802 counting only the distinct ones).

The product of its digits is 105840, while the sum is 39.

The square root of 1273317564 is about 35683.5755495438. The cubic root of 1273317564 is about 1083.8742779353.

The spelling of 1273317564 in words is "one billion, two hundred seventy-three million, three hundred seventeen thousand, five hundred sixty-four".