198047385 has 24 divisors (see below), whose sum is σ = 344208384. Its totient is φ = 105340320.

The previous prime is 198047383. The next prime is 198047401. The reversal of 198047385 is 583740891.

It is not a de Polignac number, because 198047385 - 2¹ = 198047383 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 198047385.

It is not an unprimeable number, because it can be changed into a prime (198047383) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11490 + ... + 22980.

It is an arithmetic number, because the mean of its divisors is an integer number (14342016).

Almost surely, 2^198047385 is an apocalyptic number.

198047385 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

198047385 is a deficient number, since it is larger than the sum of its proper divisors (146160999).

198047385 is a wasteful number, since it uses less digits than its factorization.

198047385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11885 (or 11882 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The square root of 198047385 is about 14072.9309314016. The cubic root of 198047385 is about 582.8941599647.

The spelling of 198047385 in words is "one hundred ninety-eight million, forty-seven thousand, three hundred eighty-five".