2143838571 has 48 divisors (see below), whose sum is σ = 3541434624. Its totient is φ = 1129059648.

The previous prime is 2143838527. The next prime is 2143838581. The reversal of 2143838571 is 1758383412.

It is not a de Polignac number, because 2143838571 - 2¹³ = 2143830379 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2143838581) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 276676 + ... + 284318.

It is an arithmetic number, because the mean of its divisors is an integer number (73779888).

Almost surely, 2^2143838571 is an apocalyptic number.

2143838571 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2143838571 is a deficient number, since it is larger than the sum of its proper divisors (1397596053).

2143838571 is a wasteful number, since it uses less digits than its factorization.

2143838571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7728 (or 7709 counting only the distinct ones).

The product of its digits is 161280, while the sum is 42.

The square root of 2143838571 is about 46301.6044106465. The cubic root of 2143838571 is about 1289.4287820131.

The spelling of 2143838571 in words is "two billion, one hundred forty-three million, eight hundred thirty-eight thousand, five hundred seventy-one".