189516544 has 72 divisors (see below), whose sum is σ = 457839648. Its totient is φ = 76431360.

The previous prime is 189516517. The next prime is 189516557. The reversal of 189516544 is 445615981.

It is a self number, because there is not a number n which added to its sum of digits gives 189516544.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27354 + ... + 33574.

It is an arithmetic number, because the mean of its divisors is an integer number (6358884).

Almost surely, 2^189516544 is an apocalyptic number.

189516544 is a gapful number since it is divisible by the number (14) 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 189516544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (228919824).

189516544 is an abundant number, since it is smaller than the sum of its proper divisors (268323104).

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

189516544 is an equidigital number, since it uses as much as digits as its factorization.

189516544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6261 (or 6247 counting only the distinct ones).

The product of its digits is 172800, while the sum is 43.

The square root of 189516544 is about 13766.5007899611. The cubic root of 189516544 is about 574.4016904433.

The spelling of 189516544 in words is "one hundred eighty-nine million, five hundred sixteen thousand, five hundred forty-four".