198514378 has 4 divisors (see below), whose sum is σ = 297771570. Its totient is φ = 99257188.

The previous prime is 198514331. The next prime is 198514391. The reversal of 198514378 is 873415891.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 172738449 + 25775929 = 13143^2 + 5077^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49628593 + ... + 49628596.

Almost surely, 2^198514378 is an apocalyptic number.

198514378 is a deficient number, since it is larger than the sum of its proper divisors (99257192).

198514378 is an equidigital number, since it uses as much as digits as its factorization.

198514378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99257191.

The product of its digits is 241920, while the sum is 46.

The square root of 198514378 is about 14089.5130504926. The cubic root of 198514378 is about 583.3519524579.

The spelling of 198514378 in words is "one hundred ninety-eight million, five hundred fourteen thousand, three hundred seventy-eight".