198071953 has 8 divisors (see below), whose sum is σ = 199119200. Its totient is φ = 197028288.

The previous prime is 198071893. The next prime is 198071957. The reversal of 198071953 is 359170891.

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

It is a cyclic number.

It is not a de Polignac number, because 198071953 - 2¹⁷ = 197940881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (198071957) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 267658 + ... + 268396.

It is an arithmetic number, because the mean of its divisors is an integer number (24889900).

Almost surely, 2^198071953 is an apocalyptic number.

It is an amenable number.

198071953 is a deficient number, since it is larger than the sum of its proper divisors (1047247).

198071953 is an equidigital number, since it uses as much as digits as its factorization.

198071953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1791.

The product of its (nonzero) digits is 68040, while the sum is 43.

The square root of 198071953 is about 14073.8037857574. The cubic root of 198071953 is about 582.9182618593.

The spelling of 198071953 in words is "one hundred ninety-eight million, seventy-one thousand, nine hundred fifty-three".