189590545 has 16 divisors (see below), whose sum is σ = 249201360. Its totient is φ = 137826304.

The previous prime is 189590543. The next prime is 189590549. The reversal of 189590545 is 545095981.

It can be written as a sum of positive squares in 8 ways, for example, as 4739329 + 184851216 = 2177^2 + 13596^2 .

It is a cyclic number.

It is not a de Polignac number, because 189590545 - 2¹ = 189590543 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 189590495 and 189590504.

It is not an unprimeable number, because it can be changed into a prime (189590543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35992 + ... + 40921.

It is an arithmetic number, because the mean of its divisors is an integer number (15575085).

Almost surely, 2^189590545 is an apocalyptic number.

It is an amenable number.

189590545 is a deficient number, since it is larger than the sum of its proper divisors (59610815).

189590545 is a wasteful number, since it uses less digits than its factorization.

189590545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76964.

The product of its (nonzero) digits is 324000, while the sum is 46.

The square root of 189590545 is about 13769.1882476782. The cubic root of 189590545 is about 574.4764434038.

The spelling of 189590545 in words is "one hundred eighty-nine million, five hundred ninety thousand, five hundred forty-five".