166511132 has 6 divisors (see below), whose sum is σ = 291394488. Its totient is φ = 83255564.

The previous prime is 166511129. The next prime is 166511143. The reversal of 166511132 is 231115661.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 20813888 + ... + 20813895.

It is an arithmetic number, because the mean of its divisors is an integer number (48565748).

Almost surely, 2^166511132 is an apocalyptic number.

It is an amenable number.

166511132 is a deficient number, since it is larger than the sum of its proper divisors (124883356).

166511132 is a wasteful number, since it uses less digits than its factorization.

166511132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41627787 (or 41627785 counting only the distinct ones).

The product of its digits is 1080, while the sum is 26.

The square root of 166511132 is about 12903.9192495924. The cubic root of 166511132 is about 550.1499668188.

Adding to 166511132 its reverse (231115661), we get a palindrome (397626793).

The spelling of 166511132 in words is "one hundred sixty-six million, five hundred eleven thousand, one hundred thirty-two".