2143942660 has 48 divisors (see below), whose sum is σ = 4540790016. Its totient is φ = 850270592.

The previous prime is 2143942639. The next prime is 2143942663. The reversal of 2143942660 is 662493412.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (2143942663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2180529 + ... + 2181511.

It is an arithmetic number, because the mean of its divisors is an integer number (94599792).

Almost surely, 2^2143942660 is an apocalyptic number.

2143942660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2143942660 is an abundant number, since it is smaller than the sum of its proper divisors (2396847356).

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

2143942660 is a wasteful number, since it uses less digits than its factorization.

2143942660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1812 (or 1810 counting only the distinct ones).

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

The square root of 2143942660 is about 46302.7284293269. The cubic root of 2143942660 is about 1289.4496500614.

The spelling of 2143942660 in words is "two billion, one hundred forty-three million, nine hundred forty-two thousand, six hundred sixty".