198143698 has 8 divisors (see below), whose sum is σ = 298172160. Its totient is φ = 98752980.

The previous prime is 198143629. The next prime is 198143713. The reversal of 198143698 is 896341891.

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

It is a super-3 number, since 3×198143698³ (a number of 26 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 158658 + ... + 159901.

It is an arithmetic number, because the mean of its divisors is an integer number (37271520).

Almost surely, 2^198143698 is an apocalyptic number.

198143698 is a deficient number, since it is larger than the sum of its proper divisors (100028462).

198143698 is a wasteful number, since it uses less digits than its factorization.

198143698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318872.

The product of its digits is 373248, while the sum is 49.

The square root of 198143698 is about 14076.3524394639. The cubic root of 198143698 is about 582.9886343032.

The spelling of 198143698 in words is "one hundred ninety-eight million, one hundred forty-three thousand, six hundred ninety-eight".