1528479724489 has 3 divisors (see below), whose sum is σ = 1528480960807. Its totient is φ = 1528478488172.

The previous prime is 1528479724463. The next prime is 1528479724547. The reversal of 1528479724489 is 9844279748251.

The square root of 1528479724489 is 1236317.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 57333908025 + 1471145816464 = 239445^2 + 1212908^2 .

It is not a de Polignac number, because 1528479724489 - 2¹⁹ = 1528479200201 is a prime.

It is a super-2 number, since 2×1528479724489² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1528479754489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 618159 + ... + 1854475.

Almost surely, 2^{1528479724489} is an apocalyptic number.

1528479724489 is the 1236317-th square number.

1528479724489 is the 618159-th centered octagonal number.

It is an amenable number.

1528479724489 is a deficient number, since it is larger than the sum of its proper divisors (1236318).

1528479724489 is an frugal number, since it uses more digits than its factorization.

1528479724489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2472634 (or 1236317 counting only the distinct ones).

The product of its digits is 325140480, while the sum is 70.

The spelling of 1528479724489 in words is "one trillion, five hundred twenty-eight billion, four hundred seventy-nine million, seven hundred twenty-four thousand, four hundred eighty-nine".