198854105 has 8 divisors (see below), whose sum is σ = 238761864. Its totient is φ = 158992000.

The previous prime is 198854101. The next prime is 198854137. The reversal of 198854105 is 501458891.

It can be written as a sum of positive squares in 4 ways, for example, as 6948496 + 191905609 = 2636^2 + 13853^2 .

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

It is not a de Polignac number, because 198854105 - 2² = 198854101 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (198854101) 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, 956 + ... + 19965.

It is an arithmetic number, because the mean of its divisors is an integer number (29845233).

Almost surely, 2^198854105 is an apocalyptic number.

It is an amenable number.

198854105 is a deficient number, since it is larger than the sum of its proper divisors (39907759).

198854105 is a wasteful number, since it uses less digits than its factorization.

198854105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22827.

The product of its (nonzero) digits is 57600, while the sum is 41.

The square root of 198854105 is about 14101.5639203600. The cubic root of 198854105 is about 583.6845353607.

The spelling of 198854105 in words is "one hundred ninety-eight million, eight hundred fifty-four thousand, one hundred five".