17198486449 has 3 divisors (see below), whose sum is σ = 17198617593. Its totient is φ = 17198355306.

The previous prime is 17198486447. The next prime is 17198486477. The reversal of 17198486449 is 94468489171.

The square root of 17198486449 is 131143.

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 is not a de Polignac number, because 17198486449 - 2¹ = 17198486447 is a prime.

It is a super-2 number, since 2×17198486449² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (17198486447) 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, 65572 + ... + 196714.

It is an arithmetic number, because the mean of its divisors is an integer number (5732872531).

Almost surely, 2^17198486449 is an apocalyptic number.

17198486449 is the 131143-rd square number.

17198486449 is the 65572-nd centered octagonal number.

It is an amenable number.

17198486449 is a deficient number, since it is larger than the sum of its proper divisors (131144).

17198486449 is an frugal number, since it uses more digits than its factorization.

17198486449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262286 (or 131143 counting only the distinct ones).

The product of its digits is 13934592, while the sum is 61.

The spelling of 17198486449 in words is "seventeen billion, one hundred ninety-eight million, four hundred eighty-six thousand, four hundred forty-nine".