198148811 has 8 divisors (see below), whose sum is σ = 228534240. Its totient is φ = 168283008.

The previous prime is 198148789. The next prime is 198148843. The reversal of 198148811 is 118841891.

It is a happy number.

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 198148811 - 2⁶ = 198148747 is a prime.

It is a super-3 number, since 3×198148811³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (198148411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 129086 + ... + 130611.

It is an arithmetic number, because the mean of its divisors is an integer number (28566780).

Almost surely, 2^198148811 is an apocalyptic number.

198148811 is a deficient number, since it is larger than the sum of its proper divisors (30385429).

198148811 is a wasteful number, since it uses less digits than its factorization.

198148811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259813.

The product of its digits is 18432, while the sum is 41.

The square root of 198148811 is about 14076.5340549441. The cubic root of 198148811 is about 582.9936488378.

The spelling of 198148811 in words is "one hundred ninety-eight million, one hundred forty-eight thousand, eight hundred eleven".