154881189 has 12 divisors (see below), whose sum is σ = 224397472. Its totient is φ = 102940200.

The previous prime is 154881137. The next prime is 154881247. The reversal of 154881189 is 981188451.

154881189 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 154881189 - 2⁷ = 154881061 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (154881119) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23017 + ... + 28974.

Almost surely, 2^154881189 is an apocalyptic number.

It is an amenable number.

154881189 is a deficient number, since it is larger than the sum of its proper divisors (69516283).

154881189 is a wasteful number, since it uses less digits than its factorization.

154881189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52328 (or 52325 counting only the distinct ones).

The product of its digits is 92160, while the sum is 45.

The square root of 154881189 is about 12445.1271186758. The cubic root of 154881189 is about 537.0312498070.

The spelling of 154881189 in words is "one hundred fifty-four million, eight hundred eighty-one thousand, one hundred eighty-nine".