189056645 has 8 divisors (see below), whose sum is σ = 228655104. Its totient is φ = 150053904.

The previous prime is 189056639. The next prime is 189056683. The reversal of 189056645 is 546650981.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-189056645 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 189056596 and 189056605.

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, 148229 + ... + 149498.

It is an arithmetic number, because the mean of its divisors is an integer number (28581888).

Almost surely, 2^189056645 is an apocalyptic number.

It is an amenable number.

189056645 is a deficient number, since it is larger than the sum of its proper divisors (39598459).

189056645 is a wasteful number, since it uses less digits than its factorization.

189056645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297859.

The product of its (nonzero) digits is 259200, while the sum is 44.

The square root of 189056645 is about 13749.7870892607. The cubic root of 189056645 is about 573.9366813732.

The spelling of 189056645 in words is "one hundred eighty-nine million, fifty-six thousand, six hundred forty-five".