198155287 has 16 divisors (see below), whose sum is σ = 222147360. Its totient is φ = 176742280.

The previous prime is 198155273. The next prime is 198155311. The reversal of 198155287 is 782551891.

The cubic root of 198155287 is 583.

It is a perfect power (a cube), and thus also a powerful number.

It is not a de Polignac number, because 198155287 - 2¹⁹ = 197630999 is a prime.

It is a Duffinian number.

Its product of digits (201600) is a multiple of the sum of its prime divisors (64).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198155257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3738753 + ... + 3738805.

It is an arithmetic number, because the mean of its divisors is an integer number (13884210).

Almost surely, 2^198155287 is an apocalyptic number.

198155287 is a deficient number, since it is larger than the sum of its proper divisors (23992073).

198155287 is an frugal number, since it uses more digits than its factorization.

198155287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192 (or 64 counting only the distinct ones).

The product of its digits is 201600, while the sum is 46.

The square root of 198155287 is about 14076.7640812795.

The spelling of 198155287 in words is "one hundred ninety-eight million, one hundred fifty-five thousand, two hundred eighty-seven".