189396045 has 12 divisors (see below), whose sum is σ = 328286556. Its totient is φ = 101011200.

The previous prime is 189395993. The next prime is 189396059. The reversal of 189396045 is 540693981.

It is a happy number.

189396045 is a `hidden beast` number, since 1 + 8 + 9 + 39 + 604 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 124077321 + 65318724 = 11139^2 + 8082^2 .

It is not a de Polignac number, because 189396045 - 2⁶ = 189395981 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 4208801 = 189396045 / (1 + 8 + 9 + 3 + 9 + 6 + 0 + 4 + 5).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2104356 + ... + 2104445.

It is an arithmetic number, because the mean of its divisors is an integer number (27357213).

Almost surely, 2^189396045 is an apocalyptic number.

189396045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

189396045 is a deficient number, since it is larger than the sum of its proper divisors (138890511).

189396045 is a wasteful number, since it uses less digits than its factorization.

189396045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4208812 (or 4208809 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The square root of 189396045 is about 13762.1235643341. The cubic root of 189396045 is about 574.2799253413.

The spelling of 189396045 in words is "one hundred eighty-nine million, three hundred ninety-six thousand, forty-five".