198866481 has 8 divisors (see below), whose sum is σ = 289260384. Its totient is φ = 120525120.

The previous prime is 198866429. The next prime is 198866489. The reversal of 198866481 is 184668891.

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

It is not a de Polignac number, because 198866481 - 2⁹ = 198865969 is a prime.

It is a super-2 number, since 2×198866481² = 79095754530646722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (198866489) 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, 3013096 + ... + 3013161.

It is an arithmetic number, because the mean of its divisors is an integer number (36157548).

Almost surely, 2^198866481 is an apocalyptic number.

198866481 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

198866481 is a deficient number, since it is larger than the sum of its proper divisors (90393903).

198866481 is a wasteful number, since it uses less digits than its factorization.

198866481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6026271.

The product of its digits is 663552, while the sum is 51.

The square root of 198866481 is about 14102.0027301089. The cubic root of 198866481 is about 583.6966439532.

The spelling of 198866481 in words is "one hundred ninety-eight million, eight hundred sixty-six thousand, four hundred eighty-one".