198334155 has 16 divisors (see below), whose sum is σ = 336001824. Its totient is φ = 99555840.

The previous prime is 198334151. The next prime is 198334163. The reversal of 198334155 is 551433891.

It is not a de Polignac number, because 198334155 - 2² = 198334151 is a prime.

It is not an unprimeable number, because it can be changed into a prime (198334151) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 388636 + ... + 389145.

It is an arithmetic number, because the mean of its divisors is an integer number (21000114).

Almost surely, 2^198334155 is an apocalyptic number.

198334155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

198334155 is a deficient number, since it is larger than the sum of its proper divisors (137667669).

198334155 is a wasteful number, since it uses less digits than its factorization.

198334155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 777806.

The product of its digits is 64800, while the sum is 39.

The square root of 198334155 is about 14083.1159549299. The cubic root of 198334155 is about 583.1753652983.

The spelling of 198334155 in words is "one hundred ninety-eight million, three hundred thirty-four thousand, one hundred fifty-five".