198015045 has 32 divisors (see below), whose sum is σ = 331067520. Its totient is φ = 100934400.

The previous prime is 198015019. The next prime is 198015047. The reversal of 198015045 is 540510891.

It is not a de Polignac number, because 198015045 - 2⁷ = 198014917 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 198014997 and 198015015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198015047) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 41682 + ... + 46188.

It is an arithmetic number, because the mean of its divisors is an integer number (10345860).

Almost surely, 2^198015045 is an apocalyptic number.

198015045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

198015045 is a deficient number, since it is larger than the sum of its proper divisors (133052475).

198015045 is a wasteful number, since it uses less digits than its factorization.

198015045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4645.

The product of its (nonzero) digits is 7200, while the sum is 33.

The square root of 198015045 is about 14071.7818701115. The cubic root of 198015045 is about 582.8624304818.

The spelling of 198015045 in words is "one hundred ninety-eight million, fifteen thousand, forty-five".