189109741 has 4 divisors (see below), whose sum is σ = 190166400. Its totient is φ = 188053084.

The previous prime is 189109727. The next prime is 189109747. The reversal of 189109741 is 147901981.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 147901981 = 1601 ⋅92381.

It is a cyclic number.

It is not a de Polignac number, because 189109741 - 2¹⁵ = 189076973 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 189109694 and 189109703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189109747) 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, 528061 + ... + 528418.

It is an arithmetic number, because the mean of its divisors is an integer number (47541600).

Almost surely, 2^189109741 is an apocalyptic number.

It is an amenable number.

189109741 is a deficient number, since it is larger than the sum of its proper divisors (1056659).

189109741 is a wasteful number, since it uses less digits than its factorization.

189109741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1056658.

The product of its (nonzero) digits is 18144, while the sum is 40.

The square root of 189109741 is about 13751.7177472489. The cubic root of 189109741 is about 573.9904058176.

The spelling of 189109741 in words is "one hundred eighty-nine million, one hundred nine thousand, seven hundred forty-one".