189745500 has 192 divisors, whose sum is σ = 669247488. Its totient is φ = 40780800.

The previous prime is 189745489. The next prime is 189745519. The reversal of 189745500 is 5547981.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 177969 + ... + 179031.

It is an arithmetic number, because the mean of its divisors is an integer number (3485664).

Almost surely, 2^189745500 is an apocalyptic number.

189745500 is a gapful number since it is divisible by the number (10) 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 189745500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (334623744).

189745500 is an abundant number, since it is smaller than the sum of its proper divisors (479501988).

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

189745500 is a wasteful number, since it uses less digits than its factorization.

189745500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1109 (or 1097 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 39.

The square root of 189745500 is about 13774.8139733355. The cubic root of 189745500 is about 574.6329099906.

The spelling of 189745500 in words is "one hundred eighty-nine million, seven hundred forty-five thousand, five hundred".