198845541 has 12 divisors (see below), whose sum is σ = 288131532. Its totient is φ = 132143616.

The previous prime is 198845513. The next prime is 198845573. The reversal of 198845541 is 145548891.

It is a happy number.

198845541 is a `hidden beast` number, since 1 + 98 + 8 + 4 + 554 + 1 = 666.

198845541 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 122213025 + 76632516 = 11055^2 + 8754^2 .

It is not a de Polignac number, because 198845541 - 2¹³ = 198837349 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198845041) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31996 + ... + 37701.

It is an arithmetic number, because the mean of its divisors is an integer number (24010961).

Almost surely, 2^198845541 is an apocalyptic number.

It is an amenable number.

198845541 is a deficient number, since it is larger than the sum of its proper divisors (89285991).

198845541 is a wasteful number, since it uses less digits than its factorization.

198845541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70020 (or 70017 counting only the distinct ones).

The product of its digits is 230400, while the sum is 45.

The square root of 198845541 is about 14101.2602628276. The cubic root of 198845541 is about 583.6761561085.

It can be divided in two parts, 19884 and 5541, that added together give a triangular number (25425 = T₂₂₅).

The spelling of 198845541 in words is "one hundred ninety-eight million, eight hundred forty-five thousand, five hundred forty-one".