1272658113 has 6 divisors (see below), whose sum is σ = 1838283954. Its totient is φ = 848438736.

The previous prime is 1272658091. The next prime is 1272658117. The reversal of 1272658113 is 3118562721.

1272658113 is a `hidden beast` number, since 1 + 2 + 72 + 6 + 581 + 1 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1151041329 + 121616784 = 33927^2 + 11028^2 .

It is not a de Polignac number, because 1272658113 - 2¹³ = 1272649921 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1272658117) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 70703220 + ... + 70703237.

It is an arithmetic number, because the mean of its divisors is an integer number (306380659).

Almost surely, 2^1272658113 is an apocalyptic number.

It is an amenable number.

1272658113 is a deficient number, since it is larger than the sum of its proper divisors (565625841).

1272658113 is a wasteful number, since it uses less digits than its factorization.

1272658113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141406463 (or 141406460 counting only the distinct ones).

The product of its digits is 20160, while the sum is 36.

The square root of 1272658113 is about 35674.3340932946. The cubic root of 1272658113 is about 1083.6871328418.

The spelling of 1272658113 in words is "one billion, two hundred seventy-two million, six hundred fifty-eight thousand, one hundred thirteen".