198730970 has 8 divisors (see below), whose sum is σ = 357715764. Its totient is φ = 79492384.

The previous prime is 198730963. The next prime is 198731011. The reversal of 198730970 is 79037891.

It can be written as a sum of positive squares in 2 ways, for example, as 182223001 + 16507969 = 13499^2 + 4063^2 .

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

It is a Curzon number.

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, 9936539 + ... + 9936558.

Almost surely, 2^198730970 is an apocalyptic number.

198730970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

198730970 is a deficient number, since it is larger than the sum of its proper divisors (158984794).

198730970 is a wasteful number, since it uses less digits than its factorization.

198730970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19873104.

The product of its (nonzero) digits is 95256, while the sum is 44.

The square root of 198730970 is about 14097.1972391678. The cubic root of 198730970 is about 583.5640335565.

The spelling of 198730970 in words is "one hundred ninety-eight million, seven hundred thirty thousand, nine hundred seventy".