198460613 has 4 divisors (see below), whose sum is σ = 213726828. Its totient is φ = 183194400.

The previous prime is 198460597. The next prime is 198460631. The reversal of 198460613 is 316064891.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 316064891 = 137 ⋅2307043.

It can be written as a sum of positive squares in 2 ways, for example, as 126855169 + 71605444 = 11263^2 + 8462^2 .

It is a cyclic number.

It is not a de Polignac number, because 198460613 - 2⁴ = 198460597 is a prime.

It is a super-2 number, since 2×198460613² = 78773229824671538, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198460693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7633088 + ... + 7633113.

It is an arithmetic number, because the mean of its divisors is an integer number (53431707).

Almost surely, 2^198460613 is an apocalyptic number.

198460613 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

198460613 is a deficient number, since it is larger than the sum of its proper divisors (15266215).

198460613 is a wasteful number, since it uses less digits than its factorization.

198460613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15266214.

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 198460613 is about 14087.6049419339. The cubic root of 198460613 is about 583.2992833095.

The spelling of 198460613 in words is "one hundred ninety-eight million, four hundred sixty thousand, six hundred thirteen".