981205198 has 8 divisors (see below), whose sum is σ = 1522559880. Its totient is φ = 473685240.

The previous prime is 981205187. The next prime is 981205213. The reversal of 981205198 is 891502189.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8458608 + ... + 8458723.

It is an arithmetic number, because the mean of its divisors is an integer number (190319985).

Almost surely, 2^981205198 is an apocalyptic number.

981205198 is a deficient number, since it is larger than the sum of its proper divisors (541354682).

981205198 is a wasteful number, since it uses less digits than its factorization.

981205198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16917362.

The product of its (nonzero) digits is 51840, while the sum is 43.

The square root of 981205198 is about 31324.1950894193. The cubic root of 981205198 is about 993.6954015703.

The spelling of 981205198 in words is "nine hundred eighty-one million, two hundred five thousand, one hundred ninety-eight".