166831396 has 12 divisors (see below), whose sum is σ = 294846300. Its totient is φ = 82589600.

The previous prime is 166831393. The next prime is 166831459. The reversal of 166831396 is 693138661.

It can be written as a sum of positive squares in 2 ways, for example, as 77264100 + 89567296 = 8790^2 + 9464^2 .

It is not an unprimeable number, because it can be changed into a prime (166831393) 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 3 ways as a sum of consecutive naturals, for example, 206071 + ... + 206878.

It is an arithmetic number, because the mean of its divisors is an integer number (24570525).

Almost surely, 2^166831396 is an apocalyptic number.

It is an amenable number.

166831396 is a deficient number, since it is larger than the sum of its proper divisors (128014904).

166831396 is a wasteful number, since it uses less digits than its factorization.

166831396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 413054 (or 413052 counting only the distinct ones).

The product of its digits is 139968, while the sum is 43.

The square root of 166831396 is about 12916.3228513381. The cubic root of 166831396 is about 550.5024565398.

The spelling of 166831396 in words is "one hundred sixty-six million, eight hundred thirty-one thousand, three hundred ninety-six".