189007145 has 8 divisors (see below), whose sum is σ = 232083456. Its totient is φ = 147689136.

The previous prime is 189007141. The next prime is 189007151. The reversal of 189007145 is 541700981.

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 189007145 - 2² = 189007141 is a prime.

It is a super-2 number, since 2×189007145² = 71447401722102050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (189007141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 439337 + ... + 439766.

It is an arithmetic number, because the mean of its divisors is an integer number (29010432).

Almost surely, 2^189007145 is an apocalyptic number.

It is an amenable number.

189007145 is a deficient number, since it is larger than the sum of its proper divisors (43076311).

189007145 is an equidigital number, since it uses as much as digits as its factorization.

189007145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 879151.

The product of its (nonzero) digits is 10080, while the sum is 35.

The square root of 189007145 is about 13747.9869435492. The cubic root of 189007145 is about 573.8865864302.

The spelling of 189007145 in words is "one hundred eighty-nine million, seven thousand, one hundred forty-five".