198994635 has 36 divisors (see below), whose sum is σ = 401242608. Its totient is φ = 90967968.

The previous prime is 198994613. The next prime is 198994681. The reversal of 198994635 is 536499891.

198994635 is a `hidden beast` number, since 1 + 98 + 99 + 463 + 5 = 666.

It is not a de Polignac number, because 198994635 - 2⁸ = 198994379 is a prime.

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 35 ways as a sum of consecutive naturals, for example, 42919 + ... + 47328.

It is an arithmetic number, because the mean of its divisors is an integer number (11145628).

Almost surely, 2^198994635 is an apocalyptic number.

198994635 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

198994635 is an abundant number, since it is smaller than the sum of its proper divisors (202247973).

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

198994635 is a wasteful number, since it uses less digits than its factorization.

198994635 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90272 (or 90262 counting only the distinct ones).

The product of its digits is 2099520, while the sum is 54.

The square root of 198994635 is about 14106.5458210010. The cubic root of 198994635 is about 583.8219994125.

The spelling of 198994635 in words is "one hundred ninety-eight million, nine hundred ninety-four thousand, six hundred thirty-five".