198211115 has 8 divisors (see below), whose sum is σ = 237964560. Its totient is φ = 158494752.

The previous prime is 198211067. The next prime is 198211129. The reversal of 198211115 is 511112891.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 198211115 - 2⁶ = 198211051 is a prime.

It is a super-2 number, since 2×198211115² = 78575292219086450, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4301 + ... + 20369.

It is an arithmetic number, because the mean of its divisors is an integer number (29745570).

Almost surely, 2^198211115 is an apocalyptic number.

198211115 is a deficient number, since it is larger than the sum of its proper divisors (39753445).

198211115 is a wasteful number, since it uses less digits than its factorization.

198211115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18541.

The product of its digits is 720, while the sum is 29.

The square root of 198211115 is about 14078.7469257743. The cubic root of 198211115 is about 583.0547460670.

The spelling of 198211115 in words is "one hundred ninety-eight million, two hundred eleven thousand, one hundred fifteen".