166010138 has 24 divisors (see below), whose sum is σ = 291640500. Its totient is φ = 70663488.

The previous prime is 166010111. The next prime is 166010171. The reversal of 166010138 is 831010661.

166010138 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 160706329 + 5303809 = 12677^2 + 2303^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8918 + ... + 20286.

Almost surely, 2^166010138 is an apocalyptic number.

166010138 is a deficient number, since it is larger than the sum of its proper divisors (125630362).

166010138 is a wasteful number, since it uses less digits than its factorization.

166010138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11534 (or 11527 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 166010138 is about 12884.4921514199. The cubic root of 166010138 is about 549.5976539496.

Adding to 166010138 its reverse (831010661), we get a palindrome (997020799).

The spelling of 166010138 in words is "one hundred sixty-six million, ten thousand, one hundred thirty-eight".