198980183 has 2 divisors, whose sum is σ = 198980184. Its totient is φ = 198980182.

The previous prime is 198980149. The next prime is 198980209. The reversal of 198980183 is 381089891.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 198980183 - 2¹⁰ = 198979159 is a prime.

It is a super-2 number, since 2×198980183² = 79186226453426978, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (198980123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99490091 + 99490092.

It is an arithmetic number, because the mean of its divisors is an integer number (99490092).

Almost surely, 2^198980183 is an apocalyptic number.

198980183 is a deficient number, since it is larger than the sum of its proper divisors (1).

198980183 is an equidigital number, since it uses as much as digits as its factorization.

198980183 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 124416, while the sum is 47.

The square root of 198980183 is about 14106.0335672364. The cubic root of 198980183 is about 583.8078656985.

The spelling of 198980183 in words is "one hundred ninety-eight million, nine hundred eighty thousand, one hundred eighty-three".