198616810 has 32 divisors (see below), whose sum is σ = 414691200. Its totient is φ = 67079232.

The previous prime is 198616771. The next prime is 198616837. The reversal of 198616810 is 18616891.

It is a super-2 number, since 2×198616810² = 78897274429152200, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16485 + ... + 25864.

It is an arithmetic number, because the mean of its divisors is an integer number (12959100).

Almost surely, 2^198616810 is an apocalyptic number.

198616810 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

198616810 is an abundant number, since it is smaller than the sum of its proper divisors (216074390).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

198616810 is a wasteful number, since it uses less digits than its factorization.

198616810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42430.

The product of its (nonzero) digits is 20736, while the sum is 40.

The square root of 198616810 is about 14093.1476257080. The cubic root of 198616810 is about 583.4522703512.

The spelling of 198616810 in words is "one hundred ninety-eight million, six hundred sixteen thousand, eight hundred ten".