189009452 has 12 divisors (see below), whose sum is σ = 330862896. Its totient is φ = 94477200.

The previous prime is 189009439. The next prime is 189009487. The reversal of 189009452 is 254900981.

It is a nialpdrome in base 11.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 22598 + ... + 29810.

It is an arithmetic number, because the mean of its divisors is an integer number (27571908).

Almost surely, 2^189009452 is an apocalyptic number.

It is an amenable number.

189009452 is a deficient number, since it is larger than the sum of its proper divisors (141853444).

189009452 is a wasteful number, since it uses less digits than its factorization.

189009452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13768 (or 13766 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 38.

The square root of 189009452 is about 13748.0708464861. The cubic root of 189009452 is about 573.8889213524. Note that the first 3 decimals are identical.

The spelling of 189009452 in words is "one hundred eighty-nine million, nine thousand, four hundred fifty-two".