189289254 has 144 divisors (see below), whose sum is σ = 514173744. Its totient is φ = 46126080.

The previous prime is 189289249. The next prime is 189289277. The reversal of 189289254 is 452982981.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 604602 + ... + 604914.

It is an arithmetic number, because the mean of its divisors is an integer number (3570651).

Almost surely, 2^189289254 is an apocalyptic number.

189289254 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 189289254, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (257086872).

189289254 is an abundant number, since it is smaller than the sum of its proper divisors (324884490).

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

189289254 is a wasteful number, since it uses less digits than its factorization.

189289254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371 (or 353 counting only the distinct ones).

The product of its digits is 414720, while the sum is 48.

The square root of 189289254 is about 13758.2431291208. The cubic root of 189289254 is about 574.1719690959.

It can be divided in two parts, 18928 and 9254, that added together give a palindrome (28182).

The spelling of 189289254 in words is "one hundred eighty-nine million, two hundred eighty-nine thousand, two hundred fifty-four".