1273688012 has 6 divisors (see below), whose sum is σ = 2228954028. Its totient is φ = 636844004.

The previous prime is 1273688011. The next prime is 1273688021. The reversal of 1273688012 is 2108863721.

It is not an unprimeable number, because it can be changed into a prime (1273688011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159210998 + ... + 159211005.

It is an arithmetic number, because the mean of its divisors is an integer number (371492338).

Almost surely, 2^1273688012 is an apocalyptic number.

It is an amenable number.

1273688012 is a deficient number, since it is larger than the sum of its proper divisors (955266016).

1273688012 is a wasteful number, since it uses less digits than its factorization.

1273688012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318422007 (or 318422005 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 38.

The square root of 1273688012 is about 35688.7659074953. The cubic root of 1273688012 is about 1083.9793787465.

The spelling of 1273688012 in words is "one billion, two hundred seventy-three million, six hundred eighty-eight thousand, twelve".