2163666142 has 16 divisors (see below), whose sum is σ = 3654756864. Its totient is φ = 951759000.

The previous prime is 2163666121. The next prime is 2163666179. The reversal of 2163666142 is 2416663612.

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, 1585584 + ... + 1586947.

It is an arithmetic number, because the mean of its divisors is an integer number (228422304).

Almost surely, 2^2163666142 is an apocalyptic number.

2163666142 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2163666142 is a deficient number, since it is larger than the sum of its proper divisors (1491090722).

2163666142 is a wasteful number, since it uses less digits than its factorization.

2163666142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3172575.

The product of its digits is 62208, while the sum is 37.

The square root of 2163666142 is about 46515.2248409056. The cubic root of 2163666142 is about 1293.3917398577.

It can be divided in two parts, 21636 and 66142, that added together give a palindrome (87778).

The spelling of 2163666142 in words is "two billion, one hundred sixty-three million, six hundred sixty-six thousand, one hundred forty-two".