198047481 has 4 divisors (see below), whose sum is σ = 264063312. Its totient is φ = 132031652.

The previous prime is 198047453. The next prime is 198047527. The reversal of 198047481 is 184740891.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 198047481 - 2⁶ = 198047417 is a prime.

It is a super-2 number, since 2×198047481² = 78445609460890722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (198047401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33007911 + ... + 33007916.

It is an arithmetic number, because the mean of its divisors is an integer number (66015828).

Almost surely, 2^198047481 is an apocalyptic number.

It is an amenable number.

198047481 is a deficient number, since it is larger than the sum of its proper divisors (66015831).

198047481 is an equidigital number, since it uses as much as digits as its factorization.

198047481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66015830.

The product of its (nonzero) digits is 64512, while the sum is 42.

The square root of 198047481 is about 14072.9343422045. The cubic root of 198047481 is about 582.8942541472.

The spelling of 198047481 in words is "one hundred ninety-eight million, forty-seven thousand, four hundred eighty-one".