154161189 has 48 divisors (see below), whose sum is σ = 280809984. Its totient is φ = 79315200.

The previous prime is 154161173. The next prime is 154161191. The reversal of 154161189 is 981161451.

It is a happy number.

It is not a de Polignac number, because 154161189 - 2⁴ = 154161173 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (154161169) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 31284 + ... + 35874.

It is an arithmetic number, because the mean of its divisors is an integer number (5850208).

Almost surely, 2^154161189 is an apocalyptic number.

It is an amenable number.

154161189 is a deficient number, since it is larger than the sum of its proper divisors (126648795).

154161189 is a wasteful number, since it uses less digits than its factorization.

154161189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4658 (or 4655 counting only the distinct ones).

The product of its digits is 8640, while the sum is 36.

The square root of 154161189 is about 12416.1664373509. The cubic root of 154161189 is about 536.1977868214.

The spelling of 154161189 in words is "one hundred fifty-four million, one hundred sixty-one thousand, one hundred eighty-nine".