198529881 has 8 divisors (see below), whose sum is σ = 288770784. Its totient is φ = 120321120.

The previous prime is 198529861. The next prime is 198529907. The reversal of 198529881 is 188925891.

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

It is not a de Polignac number, because 198529881 - 2⁹ = 198529369 is a prime.

It is a super-2 number, since 2×198529881² = 78828227299748322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (198529861) 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, 3007996 + ... + 3008061.

It is an arithmetic number, because the mean of its divisors is an integer number (36096348).

Almost surely, 2^198529881 is an apocalyptic number.

198529881 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

198529881 is a deficient number, since it is larger than the sum of its proper divisors (90240903).

198529881 is a wasteful number, since it uses less digits than its factorization.

198529881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6016071.

The product of its digits is 414720, while the sum is 51.

The square root of 198529881 is about 14090.0632007099. The cubic root of 198529881 is about 583.3671377054.

The spelling of 198529881 in words is "one hundred ninety-eight million, five hundred twenty-nine thousand, eight hundred eighty-one".