166531036 has 24 divisors (see below), whose sum is σ = 335691776. Its totient is φ = 70806960.

The previous prime is 166531033. The next prime is 166531051. The reversal of 166531036 is 630135661.

It is a junction number, because it is equal to n+sod(n) for n = 166530989 and 166531007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166531033) 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 7 ways as a sum of consecutive naturals, for example, 19860 + ... + 26971.

Almost surely, 2^166531036 is an apocalyptic number.

It is an amenable number.

166531036 is an abundant number, since it is smaller than the sum of its proper divisors (169160740).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

166531036 is a wasteful number, since it uses less digits than its factorization.

166531036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46969 (or 46967 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 31.

The square root of 166531036 is about 12904.6904650983. The cubic root of 166531036 is about 550.1718867720.

Adding to 166531036 its reverse (630135661), we get a palindrome (796666697).

It can be divided in two parts, 16653 and 1036, that added together give a square (17689 = 133²).

The spelling of 166531036 in words is "one hundred sixty-six million, five hundred thirty-one thousand, thirty-six".