198137383 has 4 divisors (see below), whose sum is σ = 202353120. Its totient is φ = 193921648.

The previous prime is 198137353. The next prime is 198137389. The reversal of 198137383 is 383731891.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 383731891 = 6217 ⋅61723.

It is a cyclic number.

It is not a de Polignac number, because 198137383 - 2²¹ = 196040231 is a prime.

It is a super-3 number, since 3×198137383³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198137389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2107798 + ... + 2107891.

It is an arithmetic number, because the mean of its divisors is an integer number (50588280).

Almost surely, 2^198137383 is an apocalyptic number.

198137383 is a deficient number, since it is larger than the sum of its proper divisors (4215737).

198137383 is an equidigital number, since it uses as much as digits as its factorization.

198137383 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4215736.

The product of its digits is 108864, while the sum is 43.

The square root of 198137383 is about 14076.1281253049. The cubic root of 198137383 is about 582.9824407976.

The spelling of 198137383 in words is "one hundred ninety-eight million, one hundred thirty-seven thousand, three hundred eighty-three".