189553565 has 8 divisors (see below), whose sum is σ = 227784960. Its totient is φ = 151429072.

The previous prime is 189553543. The next prime is 189553571. The reversal of 189553565 is 565355981.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 189553565 - 2⁶ = 189553501 is a prime.

It is a congruent number.

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, 22769 + ... + 29958.

It is an arithmetic number, because the mean of its divisors is an integer number (28473120).

Almost surely, 2^189553565 is an apocalyptic number.

It is an amenable number.

189553565 is a deficient number, since it is larger than the sum of its proper divisors (38231395).

189553565 is an equidigital number, since it uses as much as digits as its factorization.

189553565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53451.

The product of its digits is 810000, while the sum is 47.

The square root of 189553565 is about 13767.8453288813. The cubic root of 189553565 is about 574.4390900638.

The spelling of 189553565 in words is "one hundred eighty-nine million, five hundred fifty-three thousand, five hundred sixty-five".