198143629 has 2 divisors, whose sum is σ = 198143630. Its totient is φ = 198143628.

The previous prime is 198143581. The next prime is 198143713. The reversal of 198143629 is 926341891.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 160909225 + 37234404 = 12685^2 + 6102^2 .

It is a cyclic number.

It is not a de Polignac number, because 198143629 - 2¹⁷ = 198012557 is a prime.

It is a super-3 number, since 3×198143629³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (198144629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99071814 + 99071815.

It is an arithmetic number, because the mean of its divisors is an integer number (99071815).

Almost surely, 2^198143629 is an apocalyptic number.

It is an amenable number.

198143629 is a deficient number, since it is larger than the sum of its proper divisors (1).

198143629 is an equidigital number, since it uses as much as digits as its factorization.

198143629 is an evil number, because the sum of its binary digits is even.

The product of its digits is 93312, while the sum is 43.

The square root of 198143629 is about 14076.3499885446. The cubic root of 198143629 is about 582.9885666314.

The spelling of 198143629 in words is "one hundred ninety-eight million, one hundred forty-three thousand, six hundred twenty-nine".