15745983289 has 9 divisors (see below), whose sum is σ = 16311440847. Its totient is φ = 15199504824.

The previous prime is 15745983277. The next prime is 15745983299. The reversal of 15745983289 is 98238954751.

The square root of 15745983289 is 125483.

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., 8256811689 + 7489171600 = 90867^2 + 86540^2 .

It is not a de Polignac number, because 15745983289 - 2¹¹ = 15745981241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15745983299) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 3636844 + ... + 3641170.

Almost surely, 2^15745983289 is an apocalyptic number.

15745983289 is the 125483-rd square number.

15745983289 is the 62742-nd centered octagonal number.

It is an amenable number.

15745983289 is a deficient number, since it is larger than the sum of its proper divisors (565457558).

15745983289 is an frugal number, since it uses more digits than its factorization.

15745983289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8712 (or 4356 counting only the distinct ones).

The product of its digits is 21772800, while the sum is 61.

The spelling of 15745983289 in words is "fifteen billion, seven hundred forty-five million, nine hundred eighty-three thousand, two hundred eighty-nine".