1272651413 has 16 divisors (see below), whose sum is σ = 1409788800. Its totient is φ = 1139143680.

The previous prime is 1272651403. The next prime is 1272651421. The reversal of 1272651413 is 3141562721.

It is a cyclic number.

It is not a de Polignac number, because 1272651413 - 2²⁶ = 1205542549 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1272651413.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1272651403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 672773 + ... + 674661.

It is an arithmetic number, because the mean of its divisors is an integer number (88111800).

Almost surely, 2^1272651413 is an apocalyptic number.

It is an amenable number.

1272651413 is a deficient number, since it is larger than the sum of its proper divisors (137137387).

1272651413 is a wasteful number, since it uses less digits than its factorization.

1272651413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2812.

The product of its digits is 10080, while the sum is 32.

The square root of 1272651413 is about 35674.2401881245. The cubic root of 1272651413 is about 1083.6852311223.

The spelling of 1272651413 in words is "one billion, two hundred seventy-two million, six hundred fifty-one thousand, four hundred thirteen".