189135768 has 32 divisors (see below), whose sum is σ = 477264960. Its totient is φ = 62455200.

The previous prime is 189135763. The next prime is 189135811. The reversal of 189135768 is 867531981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189135763) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34258 + ... + 39393.

It is an arithmetic number, because the mean of its divisors is an integer number (14914530).

Almost surely, 2^189135768 is an apocalyptic number.

It is an amenable number.

189135768 is an abundant number, since it is smaller than the sum of its proper divisors (288129192).

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

189135768 is a wasteful number, since it uses less digits than its factorization.

189135768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73767 (or 73763 counting only the distinct ones).

The product of its digits is 362880, while the sum is 48.

The square root of 189135768 is about 13752.6640328338. The cubic root of 189135768 is about 574.0167372005.

The spelling of 189135768 in words is "one hundred eighty-nine million, one hundred thirty-five thousand, seven hundred sixty-eight".