189818448 has 40 divisors (see below), whose sum is σ = 511687488. Its totient is φ = 60521472.

The previous prime is 189818393. The next prime is 189818449. The reversal of 189818448 is 844818981.

It is a super-2 number, since 2×189818448² = 72062086402257408, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 189818448.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189818449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84865 + ... + 87072.

Almost surely, 2^189818448 is an apocalyptic number.

It is an amenable number.

189818448 is an abundant number, since it is smaller than the sum of its proper divisors (321869040).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

189818448 is a wasteful number, since it uses less digits than its factorization.

189818448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171971 (or 171965 counting only the distinct ones).

The product of its digits is 589824, while the sum is 51.

The square root of 189818448 is about 13777.4615949383. The cubic root of 189818448 is about 574.7065401089.

The spelling of 189818448 in words is "one hundred eighty-nine million, eight hundred eighteen thousand, four hundred forty-eight".