198319237 has 8 divisors (see below), whose sum is σ = 202356000. Its totient is φ = 194305104.

The previous prime is 198319217. The next prime is 198319243. The reversal of 198319237 is 732913891.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 198319237 - 2⁷ = 198319109 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 198319193 and 198319202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198319217) 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 7 ways as a sum of consecutive naturals, for example, 12639 + ... + 23587.

It is an arithmetic number, because the mean of its divisors is an integer number (25294500).

Almost surely, 2^198319237 is an apocalyptic number.

It is an amenable number.

198319237 is a deficient number, since it is larger than the sum of its proper divisors (4036763).

198319237 is a wasteful number, since it uses less digits than its factorization.

198319237 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11315.

The product of its digits is 81648, while the sum is 43.

The square root of 198319237 is about 14082.5863036589. The cubic root of 198319237 is about 583.1607434627.

The spelling of 198319237 in words is "one hundred ninety-eight million, three hundred nineteen thousand, two hundred thirty-seven".