198319515 has 16 divisors (see below), whose sum is σ = 317488896. Its totient is φ = 105711200.

The previous prime is 198319477. The next prime is 198319529. The reversal of 198319515 is 515913891.

It is not a de Polignac number, because 198319515 - 2¹⁷ = 198188443 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42970 + ... + 47360.

It is an arithmetic number, because the mean of its divisors is an integer number (19843056).

Almost surely, 2^198319515 is an apocalyptic number.

198319515 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

198319515 is a deficient number, since it is larger than the sum of its proper divisors (119169381).

198319515 is a wasteful number, since it uses less digits than its factorization.

198319515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7410.

The product of its digits is 48600, while the sum is 42.

The square root of 198319515 is about 14082.5961740014. The cubic root of 198319515 is about 583.1610159503.

The spelling of 198319515 in words is "one hundred ninety-eight million, three hundred nineteen thousand, five hundred fifteen".