189747568 has 20 divisors (see below), whose sum is σ = 369248440. Its totient is φ = 94457664.

The previous prime is 189747563. The next prime is 189747583. The reversal of 189747568 is 865747981.

189747568 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 not an unprimeable number, because it can be changed into a prime (189747563) 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, 22230 + ... + 29557.

It is an arithmetic number, because the mean of its divisors is an integer number (18462422).

Almost surely, 2^189747568 is an apocalyptic number.

It is an amenable number.

189747568 is a deficient number, since it is larger than the sum of its proper divisors (179500872).

189747568 is a wasteful number, since it uses less digits than its factorization.

189747568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52024 (or 52018 counting only the distinct ones).

The product of its digits is 3386880, while the sum is 55.

The square root of 189747568 is about 13774.8890376656. The cubic root of 189747568 is about 574.6349975879.

The spelling of 189747568 in words is "one hundred eighty-nine million, seven hundred forty-seven thousand, five hundred sixty-eight".