193540198 has 4 divisors (see below), whose sum is σ = 290310300. Its totient is φ = 96770098.

The previous prime is 193540181. The next prime is 193540231. The reversal of 193540198 is 891045391.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 891045391 = 10091 ⋅88301.

It is a self number, because there is not a number n which added to its sum of digits gives 193540198.

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, 48385048 + ... + 48385051.

It is an arithmetic number, because the mean of its divisors is an integer number (72577575).

Almost surely, 2^193540198 is an apocalyptic number.

193540198 is a deficient number, since it is larger than the sum of its proper divisors (96770102).

193540198 is an equidigital number, since it uses as much as digits as its factorization.

193540198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96770101.

The product of its (nonzero) digits is 38880, while the sum is 40.

The square root of 193540198 is about 13911.8725554830. The cubic root of 193540198 is about 578.4383256541.

The spelling of 193540198 in words is "one hundred ninety-three million, five hundred forty thousand, one hundred ninety-eight".