189563136 has 144 divisors (see below), whose sum is σ = 592792704. Its totient is φ = 52641792.

The previous prime is 189563117. The next prime is 189563137. The reversal of 189563136 is 631365981.

It is a happy number.

189563136 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (189563137) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 198436 + ... + 199388.

It is an arithmetic number, because the mean of its divisors is an integer number (4116616).

Almost surely, 2^189563136 is an apocalyptic number.

189563136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 189563136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (296396352).

189563136 is an abundant number, since it is smaller than the sum of its proper divisors (403229568).

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

189563136 is an equidigital number, since it uses as much as digits as its factorization.

189563136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1016 (or 1002 counting only the distinct ones).

The product of its digits is 116640, while the sum is 42.

The square root of 189563136 is about 13768.1929097467. The cubic root of 189563136 is about 574.4487581560.

The spelling of 189563136 in words is "one hundred eighty-nine million, five hundred sixty-three thousand, one hundred thirty-six".