2143601166 has 32 divisors (see below), whose sum is σ = 5157538560. Its totient is φ = 580222656.

The previous prime is 2143601153. The next prime is 2143601171. The reversal of 2143601166 is 6611063412.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1342311 + ... + 1343906.

It is an arithmetic number, because the mean of its divisors is an integer number (161173080).

Almost surely, 2^2143601166 is an apocalyptic number.

2143601166 is an abundant number, since it is smaller than the sum of its proper divisors (3013937394).

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

2143601166 is a wasteful number, since it uses less digits than its factorization.

2143601166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2686248.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 2143601166 is about 46299.0406596076. The cubic root of 2143601166 is about 1289.3811838801.

Adding to 2143601166 its reverse (6611063412), we get a palindrome (8754664578).

The spelling of 2143601166 in words is "two billion, one hundred forty-three million, six hundred one thousand, one hundred sixty-six".