198038366 has 4 divisors (see below), whose sum is σ = 297057552. Its totient is φ = 99019182.

The previous prime is 198038353. The next prime is 198038377. The reversal of 198038366 is 663830891.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 663830891 = 2909 ⋅228199.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49509590 + ... + 49509593.

It is an arithmetic number, because the mean of its divisors is an integer number (74264388).

Almost surely, 2^198038366 is an apocalyptic number.

198038366 is a deficient number, since it is larger than the sum of its proper divisors (99019186).

198038366 is an equidigital number, since it uses as much as digits as its factorization.

198038366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99019185.

The product of its (nonzero) digits is 186624, while the sum is 44.

The square root of 198038366 is about 14072.6104898842. The cubic root of 198038366 is about 582.8853115734.

The spelling of 198038366 in words is "one hundred ninety-eight million, thirty-eight thousand, three hundred sixty-six".