1329162269449 has 27 divisors (see below), whose sum is σ = 1561516955271. Its totient is φ = 1128082742640.

The previous prime is 1329162269443. The next prime is 1329162269531. The reversal of 1329162269449 is 9449622619231.

The square root of 1329162269449 is 1152893.

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

It can be written as a sum of positive squares in only one way, i.e., 926419725049 + 402742544400 = 962507^2 + 634620^2 .

It is not a de Polignac number, because 1329162269449 - 2¹¹ = 1329162267401 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1329162269393 and 1329162269402.

It is not an unprimeable number, because it can be changed into a prime (1329162269443) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 879656604 + ... + 879658114.

Almost surely, 2^{1329162269449} is an apocalyptic number.

1329162269449 is the 1152893-rd square number.

1329162269449 is the 576447-th centered octagonal number.

It is an amenable number.

1329162269449 is a deficient number, since it is larger than the sum of its proper divisors (232354685822).

1329162269449 is an frugal number, since it uses more digits than its factorization.

1329162269449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3254 (or 1627 counting only the distinct ones).

The product of its digits is 10077696, while the sum is 58.

The spelling of 1329162269449 in words is "one trillion, three hundred twenty-nine billion, one hundred sixty-two million, two hundred sixty-nine thousand, four hundred forty-nine".