198964615 has 8 divisors (see below), whose sum is σ = 242671968. Its totient is φ = 156562080.

The previous prime is 198964613. The next prime is 198964627. The reversal of 198964615 is 516469891.

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

It is not a de Polignac number, because 198964615 - 2¹ = 198964613 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 (198964613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 325867 + ... + 326476.

It is an arithmetic number, because the mean of its divisors is an integer number (30333996).

Almost surely, 2^198964615 is an apocalyptic number.

198964615 is a deficient number, since it is larger than the sum of its proper divisors (43707353).

198964615 is an equidigital number, since it uses as much as digits as its factorization.

198964615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 652409.

The product of its digits is 466560, while the sum is 49.

The square root of 198964615 is about 14105.4817358359. The cubic root of 198964615 is about 583.7926397972.

The spelling of 198964615 in words is "one hundred ninety-eight million, nine hundred sixty-four thousand, six hundred fifteen".