198449715 has 8 divisors (see below), whose sum is σ = 317519568. Its totient is φ = 105839840.

The previous prime is 198449701. The next prime is 198449743. The reversal of 198449715 is 517944891.

198449715 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 198449715 - 2⁹ = 198449203 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6614976 + ... + 6615005.

It is an arithmetic number, because the mean of its divisors is an integer number (39689946).

Almost surely, 2^198449715 is an apocalyptic number.

198449715 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

198449715 is a deficient number, since it is larger than the sum of its proper divisors (119069853).

198449715 is a wasteful number, since it uses less digits than its factorization.

198449715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13229989.

The product of its digits is 362880, while the sum is 48.

The square root of 198449715 is about 14087.2181426994. The cubic root of 198449715 is about 583.2886062759.

The spelling of 198449715 in words is "one hundred ninety-eight million, four hundred forty-nine thousand, seven hundred fifteen".