189140136 has 64 divisors (see below), whose sum is σ = 502694400. Its totient is φ = 59133888.

The previous prime is 189140131. The next prime is 189140167. The reversal of 189140136 is 631041981.

It is a junction number, because it is equal to n+sod(n) for n = 189140097 and 189140106.

It is not an unprimeable number, because it can be changed into a prime (189140131) 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 15 ways as a sum of consecutive naturals, for example, 44955 + ... + 48981.

It is an arithmetic number, because the mean of its divisors is an integer number (7854600).

Almost surely, 2^189140136 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 189140136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (251347200).

189140136 is an abundant number, since it is smaller than the sum of its proper divisors (313554264).

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

189140136 is a wasteful number, since it uses less digits than its factorization.

189140136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4158 (or 4154 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 189140136 is about 13752.8228375123. The cubic root of 189140136 is about 574.0211560470.

The spelling of 189140136 in words is "one hundred eighty-nine million, one hundred forty thousand, one hundred thirty-six".