198370490 has 8 divisors (see below), whose sum is σ = 357066900. Its totient is φ = 79348192.

The previous prime is 198370489. The next prime is 198370541. The reversal of 198370490 is 94073891.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 198330889 + 39601 = 14083^2 + 199^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9918515 + ... + 9918534.

Almost surely, 2^198370490 is an apocalyptic number.

198370490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

198370490 is a deficient number, since it is larger than the sum of its proper divisors (158696410).

198370490 is a wasteful number, since it uses less digits than its factorization.

198370490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19837056.

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 198370490 is about 14084.4059157637. The cubic root of 198370490 is about 583.2109758786.

The spelling of 198370490 in words is "one hundred ninety-eight million, three hundred seventy thousand, four hundred ninety".