1272832913 has 8 divisors (see below), whose sum is σ = 1389363456. Its totient is φ = 1156438800.

The previous prime is 1272832909. The next prime is 1272832943. The reversal of 1272832913 is 3192382721.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1272832913 - 2² = 1272832909 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1272832943) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14081 + ... + 52382.

It is an arithmetic number, because the mean of its divisors is an integer number (173670432).

Almost surely, 2^1272832913 is an apocalyptic number.

It is an amenable number.

1272832913 is a deficient number, since it is larger than the sum of its proper divisors (116530543).

1272832913 is a wasteful number, since it uses less digits than its factorization.

1272832913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68215.

The product of its digits is 36288, while the sum is 38.

The square root of 1272832913 is about 35676.7839497901. The cubic root of 1272832913 is about 1083.7367454956.

The spelling of 1272832913 in words is "one billion, two hundred seventy-two million, eight hundred thirty-two thousand, nine hundred thirteen".