209013198 has 16 divisors (see below), whose sum is σ = 442616400. Its totient is φ = 65572736.

The previous prime is 209013193. The next prime is 209013199. The reversal of 209013198 is 891310902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (209013193) 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, 1024473 + ... + 1024676.

It is an arithmetic number, because the mean of its divisors is an integer number (27663525).

Almost surely, 2^209013198 is an apocalyptic number.

209013198 is an abundant number, since it is smaller than the sum of its proper divisors (233603202).

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

209013198 is a wasteful number, since it uses less digits than its factorization.

209013198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2049171.

The product of its (nonzero) digits is 3888, while the sum is 33.

The square root of 209013198 is about 14457.2887499697. The cubic root of 209013198 is about 593.4597055096.

The spelling of 209013198 in words is "two hundred nine million, thirteen thousand, one hundred ninety-eight".