16166394 has 12 divisors (see below), whose sum is σ = 35027226. Its totient is φ = 5388792.

The previous prime is 16166393. The next prime is 16166417. The reversal of 16166394 is 49366161.

16166394 is a `hidden beast` number, since 1 + 6 + 16 + 639 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 10478169 + 5688225 = 3237^2 + 2385^2 .

It is a super-2 number, since 2×16166394² = 522704589926472, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16166393) 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 5 ways as a sum of consecutive naturals, for example, 449049 + ... + 449084.

Almost surely, 2^16166394 is an apocalyptic number.

16166394 is an abundant number, since it is smaller than the sum of its proper divisors (18860832).

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

16166394 is a wasteful number, since it uses less digits than its factorization.

16166394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 898141 (or 898138 counting only the distinct ones).

The product of its digits is 23328, while the sum is 36.

The square root of 16166394 is about 4020.7454532711. The cubic root of 16166394 is about 252.8547130449.

The spelling of 16166394 in words is "sixteen million, one hundred sixty-six thousand, three hundred ninety-four".