198558741 has 16 divisors (see below), whose sum is σ = 268948800. Its totient is φ = 130287360.

The previous prime is 198558739. The next prime is 198558791. The reversal of 198558741 is 147855891.

It is a happy number.

198558741 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 198558741 - 2¹ = 198558739 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198558791) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48546 + ... + 52476.

It is an arithmetic number, because the mean of its divisors is an integer number (16809300).

Almost surely, 2^198558741 is an apocalyptic number.

It is an amenable number.

198558741 is a deficient number, since it is larger than the sum of its proper divisors (70390059).

198558741 is a wasteful number, since it uses less digits than its factorization.

198558741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4196.

The product of its digits is 403200, while the sum is 48.

The square root of 198558741 is about 14091.0872894891. The cubic root of 198558741 is about 583.3954040798.

It can be divided in two parts, 1985 and 58741, that added together give a triangular number (60726 = T₃₄₈).

The spelling of 198558741 in words is "one hundred ninety-eight million, five hundred fifty-eight thousand, seven hundred forty-one".