1994166 has 16 divisors (see below), whose sum is σ = 4431600. Its totient is φ = 664704.

The previous prime is 1994143. The next prime is 1994191. The reversal of 1994166 is 6614991.

It is a self number, because there is not a number n which added to its sum of digits gives 1994166.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18411 + ... + 18518.

It is an arithmetic number, because the mean of its divisors is an integer number (276975).

2^1994166 is an apocalyptic number.

1994166 is an abundant number, since it is smaller than the sum of its proper divisors (2437434).

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

1994166 is a wasteful number, since it uses less digits than its factorization.

1994166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36940 (or 36934 counting only the distinct ones).

The product of its digits is 11664, while the sum is 36.

The square root of 1994166 is about 1412.1494255213. The cubic root of 1994166 is about 125.8694793557.

The spelling of 1994166 in words is "one million, nine hundred ninety-four thousand, one hundred sixty-six".