163381198 has 4 divisors (see below), whose sum is σ = 245071800. Its totient is φ = 81690598.

The previous prime is 163381193. The next prime is 163381201. The reversal of 163381198 is 891183361.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 891183361 = 457 ⋅1950073.

It is a self number, because there is not a number n which added to its sum of digits gives 163381198.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163381193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40845298 + ... + 40845301.

It is an arithmetic number, because the mean of its divisors is an integer number (61267950).

Almost surely, 2^163381198 is an apocalyptic number.

163381198 is a deficient number, since it is larger than the sum of its proper divisors (81690602).

163381198 is an equidigital number, since it uses as much as digits as its factorization.

163381198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81690601.

The product of its digits is 31104, while the sum is 40.

The square root of 163381198 is about 12782.0654825423. The cubic root of 163381198 is about 546.6810569449.

The spelling of 163381198 in words is "one hundred sixty-three million, three hundred eighty-one thousand, one hundred ninety-eight".