198250493 has 4 divisors (see below), whose sum is σ = 226572000. Its totient is φ = 169928988.

The previous prime is 198250489. The next prime is 198250513. The reversal of 198250493 is 394052891.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 394052891 = 1423 ⋅276917.

It is a cyclic number.

It is not a de Polignac number, because 198250493 - 2² = 198250489 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 198250493.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198250483) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14160743 + ... + 14160756.

It is an arithmetic number, because the mean of its divisors is an integer number (56643000).

Almost surely, 2^198250493 is an apocalyptic number.

It is an amenable number.

198250493 is a deficient number, since it is larger than the sum of its proper divisors (28321507).

198250493 is an equidigital number, since it uses as much as digits as its factorization.

198250493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28321506.

The product of its (nonzero) digits is 77760, while the sum is 41.

The square root of 198250493 is about 14080.1453472612. The cubic root of 198250493 is about 583.0933547486.

The spelling of 198250493 in words is "one hundred ninety-eight million, two hundred fifty thousand, four hundred ninety-three".