198889035 has 32 divisors (see below), whose sum is σ = 337711680. Its totient is φ = 99606528.

The previous prime is 198889021. The next prime is 198889037. The reversal of 198889035 is 530988891.

It is not a de Polignac number, because 198889035 - 2⁵ = 198889003 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is not an unprimeable number, because it can be changed into a prime (198889037) 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 31 ways as a sum of consecutive naturals, for example, 196611 + ... + 197619.

It is an arithmetic number, because the mean of its divisors is an integer number (10553490).

Almost surely, 2^198889035 is an apocalyptic number.

198889035 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

198889035 is a deficient number, since it is larger than the sum of its proper divisors (138822645).

198889035 is a wasteful number, since it uses less digits than its factorization.

198889035 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1807.

The product of its (nonzero) digits is 622080, while the sum is 51.

The square root of 198889035 is about 14102.8023810872. The cubic root of 198889035 is about 583.7187093383.

The spelling of 198889035 in words is "one hundred ninety-eight million, eight hundred eighty-nine thousand, thirty-five".