198609541 has 8 divisors (see below), whose sum is σ = 214389504. Its totient is φ = 182901360.

The previous prime is 198609539. The next prime is 198609547. The reversal of 198609541 is 145906891.

198609541 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 198609541 - 2¹ = 198609539 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198609547) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12121 + ... + 23326.

It is an arithmetic number, because the mean of its divisors is an integer number (26798688).

Almost surely, 2^198609541 is an apocalyptic number.

It is an amenable number.

198609541 is a deficient number, since it is larger than the sum of its proper divisors (15779963).

198609541 is a wasteful number, since it uses less digits than its factorization.

198609541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35891.

The product of its (nonzero) digits is 77760, while the sum is 43.

The square root of 198609541 is about 14092.8897320599. The cubic root of 198609541 is about 583.4451525141.

The spelling of 198609541 in words is "one hundred ninety-eight million, six hundred nine thousand, five hundred forty-one".