189019892 has 12 divisors (see below), whose sum is σ = 335444256. Its totient is φ = 93178680.

The previous prime is 189019879. The next prime is 189019921. The reversal of 189019892 is 298910981.

189019892 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent 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, 332498 + ... + 333065.

It is an arithmetic number, because the mean of its divisors is an integer number (27953688).

Almost surely, 2^189019892 is an apocalyptic number.

It is an amenable number.

189019892 is a deficient number, since it is larger than the sum of its proper divisors (146424364).

189019892 is a wasteful number, since it uses less digits than its factorization.

189019892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 665638 (or 665636 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 47.

The square root of 189019892 is about 13748.4505308780. The cubic root of 189019892 is about 573.8994874731.

The spelling of 189019892 in words is "one hundred eighty-nine million, nineteen thousand, eight hundred ninety-two".