198325045 has 4 divisors (see below), whose sum is σ = 237990060. Its totient is φ = 158660032.

The previous prime is 198325033. The next prime is 198325079. The reversal of 198325045 is 540523891.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 136749636 + 61575409 = 11694^2 + 7847^2 .

It is a cyclic number.

It is not a de Polignac number, because 198325045 - 2²¹ = 196227893 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 198324995 and 198325013.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19832500 + ... + 19832509.

It is an arithmetic number, because the mean of its divisors is an integer number (59497515).

Almost surely, 2^198325045 is an apocalyptic number.

It is an amenable number.

198325045 is a deficient number, since it is larger than the sum of its proper divisors (39665015).

198325045 is an equidigital number, since it uses as much as digits as its factorization.

198325045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39665014.

The product of its (nonzero) digits is 43200, while the sum is 37.

The square root of 198325045 is about 14082.7925142707. The cubic root of 198325045 is about 583.1664362447.

It can be divided in two parts, 1983 and 25045, that added together give a triangular number (27028 = T₂₃₂).

The spelling of 198325045 in words is "one hundred ninety-eight million, three hundred twenty-five thousand, forty-five".