161232154 has 8 divisors (see below), whose sum is σ = 243296928. Its totient is φ = 80133180.

The previous prime is 161232121. The next prime is 161232163. The reversal of 161232154 is 451232161.

It is a happy number.

161232154 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 241032 + ... + 241699.

It is an arithmetic number, because the mean of its divisors is an integer number (30412116).

Almost surely, 2^161232154 is an apocalyptic number.

161232154 is a deficient number, since it is larger than the sum of its proper divisors (82064774).

161232154 is a wasteful number, since it uses less digits than its factorization.

161232154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 482900.

The product of its digits is 1440, while the sum is 25.

The square root of 161232154 is about 12697.7223941934. The cubic root of 161232154 is about 544.2735364738.

The spelling of 161232154 in words is "one hundred sixty-one million, two hundred thirty-two thousand, one hundred fifty-four".