198380306845 has 8 divisors (see below), whose sum is σ = 272064420864. Its totient is φ = 136032210384.

The previous prime is 198380306833. The next prime is 198380306879. The reversal of 198380306845 is 548603083891.

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

It is not a de Polignac number, because 198380306845 - 2¹¹ = 198380304797 is a prime.

It is a super-2 number, since 2×198380306845² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2834004349 + ... + 2834004418.

It is an arithmetic number, because the mean of its divisors is an integer number (34008052608).

Almost surely, 2^198380306845 is an apocalyptic number.

It is an amenable number.

198380306845 is a deficient number, since it is larger than the sum of its proper divisors (73684114019).

198380306845 is an equidigital number, since it uses as much as digits as its factorization.

198380306845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5668008779.

The product of its (nonzero) digits is 4976640, while the sum is 55.

The spelling of 198380306845 in words is "one hundred ninety-eight billion, three hundred eighty million, three hundred six thousand, eight hundred forty-five".