198083671 has 4 divisors (see below), whose sum is σ = 202690312. Its totient is φ = 193477032.

The previous prime is 198083663. The next prime is 198083687. The reversal of 198083671 is 176380891.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 176380891 = 167 ⋅1056173.

It is a cyclic number.

It is not a de Polignac number, because 198083671 - 2³ = 198083663 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43), and also a Moran number because the ratio is a prime number: 4606597 = 198083671 / (1 + 9 + 8 + 0 + 8 + 3 + 6 + 7 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198083621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2303256 + ... + 2303341.

It is an arithmetic number, because the mean of its divisors is an integer number (50672578).

Almost surely, 2^198083671 is an apocalyptic number.

198083671 is a deficient number, since it is larger than the sum of its proper divisors (4606641).

198083671 is an equidigital number, since it uses as much as digits as its factorization.

198083671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4606640.

The product of its (nonzero) digits is 72576, while the sum is 43.

The square root of 198083671 is about 14074.2200849639. The cubic root of 198083671 is about 582.9297568428.

The spelling of 198083671 in words is "one hundred ninety-eight million, eighty-three thousand, six hundred seventy-one".