189297445 has 16 divisors (see below), whose sum is σ = 232746048. Its totient is φ = 147755520.

The previous prime is 189297443. The next prime is 189297527. The reversal of 189297445 is 544792981.

It is not a de Polignac number, because 189297445 - 2¹ = 189297443 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189297443) 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, 33205 + ... + 38485.

It is an arithmetic number, because the mean of its divisors is an integer number (14546628).

Almost surely, 2^189297445 is an apocalyptic number.

It is an amenable number.

189297445 is a deficient number, since it is larger than the sum of its proper divisors (43448603).

189297445 is a wasteful number, since it uses less digits than its factorization.

189297445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5460.

The product of its digits is 725760, while the sum is 49.

The square root of 189297445 is about 13758.5408019891. The cubic root of 189297445 is about 574.1802509092.

The spelling of 189297445 in words is "one hundred eighty-nine million, two hundred ninety-seven thousand, four hundred forty-five".