198954101 has 4 divisors (see below), whose sum is σ = 199303104. Its totient is φ = 198605100.

The previous prime is 198954089. The next prime is 198954109. The reversal of 198954101 is 101459891.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 101459891 = 13 ⋅7804607.

It is a cyclic number.

It is not a de Polignac number, because 198954101 - 2⁶ = 198954037 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 (198954109) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 173645 + ... + 174786.

It is an arithmetic number, because the mean of its divisors is an integer number (49825776).

Almost surely, 2^198954101 is an apocalyptic number.

It is an amenable number.

198954101 is a deficient number, since it is larger than the sum of its proper divisors (349003).

198954101 is an equidigital number, since it uses as much as digits as its factorization.

198954101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349002.

The product of its (nonzero) digits is 12960, while the sum is 38.

The square root of 198954101 is about 14105.1090389263. The cubic root of 198954101 is about 583.7823563875.

The spelling of 198954101 in words is "one hundred ninety-eight million, nine hundred fifty-four thousand, one hundred one".