198440285367 has 4 divisors (see below), whose sum is σ = 264587047160. Its totient is φ = 132293523576.

The previous prime is 198440285363. The next prime is 198440285383. The reversal of 198440285367 is 763582044891.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 763582044891 = 3 ⋅254527348297.

It is not a de Polignac number, because 198440285367 - 2² = 198440285363 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 (198440285363) 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, 33073380892 + ... + 33073380897.

It is an arithmetic number, because the mean of its divisors is an integer number (66146761790).

It is a 1-persistent number, because it is pandigital, but 2⋅198440285367 = 396880570734 is not.

Almost surely, 2^198440285367 is an apocalyptic number.

198440285367 is a deficient number, since it is larger than the sum of its proper divisors (66146761793).

198440285367 is an equidigital number, since it uses as much as digits as its factorization.

198440285367 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66146761792.

The product of its (nonzero) digits is 11612160, while the sum is 57.

The spelling of 198440285367 in words is "one hundred ninety-eight billion, four hundred forty million, two hundred eighty-five thousand, three hundred sixty-seven".