198274403 has 4 divisors (see below), whose sum is σ = 198310728. Its totient is φ = 198238080.

The previous prime is 198274369. The next prime is 198274409. The reversal of 198274403 is 304472891.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 304472891 = 19 ⋅16024889.

It is a cyclic number.

It is not a de Polignac number, because 198274403 - 2¹⁴ = 198258019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (198274409) 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, 8126 + ... + 21507.

It is an arithmetic number, because the mean of its divisors is an integer number (49577682).

Almost surely, 2^198274403 is an apocalyptic number.

198274403 is a deficient number, since it is larger than the sum of its proper divisors (36325).

198274403 is an equidigital number, since it uses as much as digits as its factorization.

198274403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36324.

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 198274403 is about 14080.9943896019. The cubic root of 198274403 is about 583.1167951303.

The spelling of 198274403 in words is "one hundred ninety-eight million, two hundred seventy-four thousand, four hundred three".