1172947482729 has 81 divisors (see below), whose sum is σ = 1916135546871. Its totient is φ = 690884583840.

The previous prime is 1172947482719. The next prime is 1172947482739. The reversal of 1172947482729 is 9272847492711.

The square root of 1172947482729 is 1083027.

It is a perfect power (a square), and thus also a powerful number.

1172947482729 is a `hidden beast` number, since 1 + 1 + 7 + 294 + 74 + 8 + 272 + 9 = 666.

It is an interprime number because it is at equal distance from previous prime (1172947482719) and next prime (1172947482739).

It can be written as a sum of positive squares in only one way, i.e., 1049569515225 + 123377967504 = 1024485^2 + 351252^2 .

It is not a de Polignac number, because 1172947482729 - 2¹¹ = 1172947480681 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1172947482719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 1322375524 + ... + 1322376410.

Almost surely, 2^{1172947482729} is an apocalyptic number.

1172947482729 is the 1083027-th square number.

1172947482729 is the 541514-th centered octagonal number.

It is an amenable number.

1172947482729 is a deficient number, since it is larger than the sum of its proper divisors (743188064142).

1172947482729 is an frugal number, since it uses more digits than its factorization.

1172947482729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1876 (or 938 counting only the distinct ones).

The product of its digits is 28449792, while the sum is 63.

The spelling of 1172947482729 in words is "one trillion, one hundred seventy-two billion, nine hundred forty-seven million, four hundred eighty-two thousand, seven hundred twenty-nine".