198378416 has 10 divisors (see below), whose sum is σ = 384358212. Its totient is φ = 99189200.

The previous prime is 198378391. The next prime is 198378463. The reversal of 198378416 is 614873891.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6199310 + ... + 6199341.

Almost surely, 2^198378416 is an apocalyptic number.

198378416 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

198378416 is a deficient number, since it is larger than the sum of its proper divisors (185979796).

198378416 is a wasteful number, since it uses less digits than its factorization.

198378416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12398659 (or 12398653 counting only the distinct ones).

The product of its digits is 290304, while the sum is 47.

The square root of 198378416 is about 14084.6872879734. The cubic root of 198378416 is about 583.2187432782.

The spelling of 198378416 in words is "one hundred ninety-eight million, three hundred seventy-eight thousand, four hundred sixteen".