164193966 has 40 divisors (see below), whose sum is σ = 369345240. Its totient is φ = 54518832.

The previous prime is 164193943. The next prime is 164193979. The reversal of 164193966 is 669391461.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 43045 + ... + 46703.

It is an arithmetic number, because the mean of its divisors is an integer number (9233631).

Almost surely, 2^164193966 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 164193966, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (184672620).

164193966 is an abundant number, since it is smaller than the sum of its proper divisors (205151274).

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

164193966 is a wasteful number, since it uses less digits than its factorization.

164193966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3950 (or 3941 counting only the distinct ones).

The product of its digits is 209952, while the sum is 45.

The square root of 164193966 is about 12813.8193369502. The cubic root of 164193966 is about 547.5860776653.

The spelling of 164193966 in words is "one hundred sixty-four million, one hundred ninety-three thousand, nine hundred sixty-six".