154384189 has 4 divisors (see below), whose sum is σ = 154424124. Its totient is φ = 154344256.

The previous prime is 154384163. The next prime is 154384193. The reversal of 154384189 is 981483451.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 981483451 = 13 ⋅75498727.

It can be written as a sum of positive squares in 2 ways, for example, as 7562500 + 146821689 = 2750^2 + 12117^2 .

It is a cyclic number.

It is not a de Polignac number, because 154384189 - 2²⁵ = 120829757 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 (154384159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13462 + ... + 22135.

It is an arithmetic number, because the mean of its divisors is an integer number (38606031).

Almost surely, 2^154384189 is an apocalyptic number.

It is an amenable number.

154384189 is a deficient number, since it is larger than the sum of its proper divisors (39935).

154384189 is an equidigital number, since it uses as much as digits as its factorization.

154384189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39934.

The product of its digits is 138240, while the sum is 43.

The square root of 154384189 is about 12425.1434196954. The cubic root of 154384189 is about 536.4562057277.

The spelling of 154384189 in words is "one hundred fifty-four million, three hundred eighty-four thousand, one hundred eighty-nine".