198152999 has 4 divisors (see below), whose sum is σ = 216166920. Its totient is φ = 180139080.

The previous prime is 198152993. The next prime is 198153001. The reversal of 198152999 is 999251891.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 198152999 - 2²⁴ = 181375783 is a prime.

It is a super-2 number, since 2×198152999² = 78529222025388002, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 198152999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198152993) 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 3 ways as a sum of consecutive naturals, for example, 9006944 + ... + 9006965.

It is an arithmetic number, because the mean of its divisors is an integer number (54041730).

Almost surely, 2^198152999 is an apocalyptic number.

198152999 is a deficient number, since it is larger than the sum of its proper divisors (18013921).

198152999 is a wasteful number, since it uses less digits than its factorization.

198152999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18013920.

The product of its digits is 524880, while the sum is 53.

The square root of 198152999 is about 14076.6828123674. The cubic root of 198152999 is about 582.9977561216.

The spelling of 198152999 in words is "one hundred ninety-eight million, one hundred fifty-two thousand, nine hundred ninety-nine".