154282189 has 2 divisors, whose sum is σ = 154282190. Its totient is φ = 154282188.

The previous prime is 154282171. The next prime is 154282213. The reversal of 154282189 is 981282451.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 134328100 + 19954089 = 11590^2 + 4467^2 .

It is an emirp because it is prime and its reverse (981282451) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 154282189 - 2²⁵ = 120727757 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (154282129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77141094 + 77141095.

It is an arithmetic number, because the mean of its divisors is an integer number (77141095).

Almost surely, 2^154282189 is an apocalyptic number.

It is an amenable number.

154282189 is a deficient number, since it is larger than the sum of its proper divisors (1).

154282189 is an equidigital number, since it uses as much as digits as its factorization.

154282189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 46080, while the sum is 40.

The square root of 154282189 is about 12421.0381611200. The cubic root of 154282189 is about 536.3380360532.

The spelling of 154282189 in words is "one hundred fifty-four million, two hundred eighty-two thousand, one hundred eighty-nine".