205132154 has 16 divisors (see below), whose sum is σ = 313956000. Its totient is φ = 100485840.

The previous prime is 205132129. The next prime is 205132159. The reversal of 205132154 is 451231502.

It is not an unprimeable number, because it can be changed into a prime (205132159) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 136097 + ... + 137595.

It is an arithmetic number, because the mean of its divisors is an integer number (19622250).

Almost surely, 2^205132154 is an apocalyptic number.

205132154 is a deficient number, since it is larger than the sum of its proper divisors (108823846).

205132154 is a wasteful number, since it uses less digits than its factorization.

205132154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2845.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 205132154 is about 14322.4353376093. The cubic root of 205132154 is about 589.7635306318.

Adding to 205132154 its reverse (451231502), we get a palindrome (656363656).

The spelling of 205132154 in words is "two hundred five million, one hundred thirty-two thousand, one hundred fifty-four".