198410634 has 80 divisors (see below), whose sum is σ = 464567400. Its totient is φ = 63213696.

The previous prime is 198410599. The next prime is 198410647. The reversal of 198410634 is 436014891.

198410634 is a `hidden beast` number, since 1 + 9 + 8 + 4 + 10 + 634 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 106193025 + 92217609 = 10305^2 + 9603^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 737452 + ... + 737720.

Almost surely, 2^198410634 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 198410634, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (232283700).

198410634 is an abundant number, since it is smaller than the sum of its proper divisors (266156766).

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

198410634 is a wasteful number, since it uses less digits than its factorization.

198410634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 469 (or 460 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 198410634 is about 14085.8309659033. The cubic root of 198410634 is about 583.2503144621.

The spelling of 198410634 in words is "one hundred ninety-eight million, four hundred ten thousand, six hundred thirty-four".