45518189 has 2 divisors, whose sum is σ = 45518190. Its totient is φ = 45518188.

The previous prime is 45518153. The next prime is 45518227. The reversal of 45518189 is 98181554.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45333289 + 184900 = 6733^2 + 430^2 .

It is a cyclic number.

It is not a de Polignac number, because 45518189 - 2¹² = 45514093 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45518119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22759094 + 22759095.

It is an arithmetic number, because the mean of its divisors is an integer number (22759095).

Almost surely, 2^45518189 is an apocalyptic number.

It is an amenable number.

45518189 is a deficient number, since it is larger than the sum of its proper divisors (1).

45518189 is an equidigital number, since it uses as much as digits as its factorization.

45518189 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 57600, while the sum is 41.

The square root of 45518189 is about 6746.7169052807. The cubic root of 45518189 is about 357.0494142356.

The spelling of 45518189 in words is "forty-five million, five hundred eighteen thousand, one hundred eighty-nine".