17650982449 has 3 divisors (see below), whose sum is σ = 17651115307. Its totient is φ = 17650849592.

The previous prime is 17650982441. The next prime is 17650982467. The reversal of 17650982449 is 94428905671.

The square root of 17650982449 is 132857.

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, and also an emirpimes, since its reverse is a distinct semiprime: 94428905671 = 131 ⋅720831341.

It can be written as a sum of positive squares in only one way, i.e., 17459658225 + 191324224 = 132135^2 + 13832^2 .

It is not a de Polignac number, because 17650982449 - 2³ = 17650982441 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 17650982449.

It is not an unprimeable number, because it can be changed into a prime (17650982441) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 66429 + ... + 199285.

Almost surely, 2^17650982449 is an apocalyptic number.

17650982449 is the 132857-th square number.

17650982449 is the 66429-th centered octagonal number.

It is an amenable number.

17650982449 is a deficient number, since it is larger than the sum of its proper divisors (132858).

17650982449 is an frugal number, since it uses more digits than its factorization.

17650982449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265714 (or 132857 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 55.

The spelling of 17650982449 in words is "seventeen billion, six hundred fifty million, nine hundred eighty-two thousand, four hundred forty-nine".