243134166 has 64 divisors (see below), whose sum is σ = 544465152. Its totient is φ = 71760000.

The previous prime is 243134159. The next prime is 243134167. The reversal of 243134166 is 661431342.

It is a super-2 number, since 2×243134166² = 118228445353031112, which contains 22 as substring.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243134167) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 527176 + ... + 527636.

It is an arithmetic number, because the mean of its divisors is an integer number (8507268).

Almost surely, 2^243134166 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 243134166, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (272232576).

243134166 is an abundant number, since it is smaller than the sum of its proper divisors (301330986).

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

243134166 is a wasteful number, since it uses less digits than its factorization.

243134166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 669.

The product of its digits is 10368, while the sum is 30.

The square root of 243134166 is about 15592.7600507415. The cubic root of 243134166 is about 624.1399720927.

The spelling of 243134166 in words is "two hundred forty-three million, one hundred thirty-four thousand, one hundred sixty-six".