166631126 has 8 divisors (see below), whose sum is σ = 250296480. Its totient is φ = 83198968.

The previous prime is 166631123. The next prime is 166631137. The reversal of 166631126 is 621136661.

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 166631092 and 166631101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166631123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56501 + ... + 59376.

It is an arithmetic number, because the mean of its divisors is an integer number (31287060).

Almost surely, 2^166631126 is an apocalyptic number.

166631126 is a deficient number, since it is larger than the sum of its proper divisors (83665354).

166631126 is a wasteful number, since it uses less digits than its factorization.

166631126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116598.

The product of its digits is 7776, while the sum is 32.

The square root of 166631126 is about 12908.5679298674. The cubic root of 166631126 is about 550.2820878030.

Adding to 166631126 its reverse (621136661), we get a palindrome (787767787).

It can be divided in two parts, 1666311 and 26, that multiplied together give a triangular number (43324086 = T₉₃₀₈).

The spelling of 166631126 in words is "one hundred sixty-six million, six hundred thirty-one thousand, one hundred twenty-six".