198807449401 has 8 divisors (see below), whose sum is σ = 217174341600. Its totient is φ = 180489471840.

The previous prime is 198807449389. The next prime is 198807449413. The reversal of 198807449401 is 104944708891.

It is an interprime number because it is at equal distance from previous prime (198807449389) and next prime (198807449413).

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

It is a cyclic number.

It is not a de Polignac number, because 198807449401 - 2⁵ = 198807449369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (198807449441) 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, 12220156 + ... + 12236413.

It is an arithmetic number, because the mean of its divisors is an integer number (27146792700).

Almost surely, 2^198807449401 is an apocalyptic number.

198807449401 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

198807449401 is a deficient number, since it is larger than the sum of its proper divisors (18366892199).

198807449401 is a wasteful number, since it uses less digits than its factorization.

198807449401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24457319.

The product of its (nonzero) digits is 2322432, while the sum is 55.

The spelling of 198807449401 in words is "one hundred ninety-eight billion, eight hundred seven million, four hundred forty-nine thousand, four hundred one".