198459215 has 16 divisors (see below), whose sum is σ = 240443616. Its totient is φ = 157248000.

The previous prime is 198459197. The next prime is 198459221. The reversal of 198459215 is 512954891.

It is not a de Polignac number, because 198459215 - 2¹² = 198455119 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 329915 + ... + 330515.

It is an arithmetic number, because the mean of its divisors is an integer number (15027726).

Almost surely, 2^198459215 is an apocalyptic number.

198459215 is a deficient number, since it is larger than the sum of its proper divisors (41984401).

198459215 is a wasteful number, since it uses less digits than its factorization.

198459215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1130.

The product of its digits is 129600, while the sum is 44.

The square root of 198459215 is about 14087.5553237600. Note that the first 3 decimals coincide. The cubic root of 198459215 is about 583.2979136770.

The spelling of 198459215 in words is "one hundred ninety-eight million, four hundred fifty-nine thousand, two hundred fifteen".