166037331 has 8 divisors (see below), whose sum is σ = 226782864. Its totient is φ = 107991680.

The previous prime is 166037297. The next prime is 166037353. The reversal of 166037331 is 133730661.

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

It is a cyclic number.

It is not a de Polignac number, because 166037331 - 2¹¹ = 166035283 is a prime.

It is a super-2 number, since 2×166037331² = 55136790571207122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (166039331) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 674826 + ... + 675071.

It is an arithmetic number, because the mean of its divisors is an integer number (28347858).

Almost surely, 2^166037331 is an apocalyptic number.

166037331 is a deficient number, since it is larger than the sum of its proper divisors (60745533).

166037331 is a wasteful number, since it uses less digits than its factorization.

166037331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1349941.

The product of its (nonzero) digits is 6804, while the sum is 30.

The square root of 166037331 is about 12885.5473690488. The cubic root of 166037331 is about 549.6276609384.

Adding to 166037331 its reverse (133730661), we get a palindrome (299767992).

The spelling of 166037331 in words is "one hundred sixty-six million, thirty-seven thousand, three hundred thirty-one".