2143947662 has 16 divisors (see below), whose sum is σ = 3361689600. Its totient is φ = 1024260120.

The previous prime is 2143947613. The next prime is 2143947683. The reversal of 2143947662 is 2667493412.

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, 213962 + ... + 223757.

It is an arithmetic number, because the mean of its divisors is an integer number (210105600).

Almost surely, 2^2143947662 is an apocalyptic number.

2143947662 is a deficient number, since it is larger than the sum of its proper divisors (1217741938).

2143947662 is a wasteful number, since it uses less digits than its factorization.

2143947662 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 437831.

The product of its digits is 435456, while the sum is 44.

The square root of 2143947662 is about 46302.7824433910. The cubic root of 2143947662 is about 1289.4506528591.

The spelling of 2143947662 in words is "two billion, one hundred forty-three million, nine hundred forty-seven thousand, six hundred sixty-two".