189561067 has 4 divisors (see below), whose sum is σ = 200711736. Its totient is φ = 178410400.

The previous prime is 189561037. The next prime is 189561077. The reversal of 189561067 is 760165981.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 189561067 - 2¹⁹ = 189036779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (189561017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5575309 + ... + 5575342.

It is an arithmetic number, because the mean of its divisors is an integer number (50177934).

Almost surely, 2^189561067 is an apocalyptic number.

189561067 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

189561067 is a deficient number, since it is larger than the sum of its proper divisors (11150669).

189561067 is a wasteful number, since it uses less digits than its factorization.

189561067 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11150668.

The product of its (nonzero) digits is 90720, while the sum is 43.

The square root of 189561067 is about 13768.1177725933. The cubic root of 189561067 is about 574.4466681947.

The spelling of 189561067 in words is "one hundred eighty-nine million, five hundred sixty-one thousand, sixty-seven".