2143732657 has 16 divisors (see below), whose sum is σ = 2478168000. Its totient is φ = 1832739840.

The previous prime is 2143732649. The next prime is 2143732697. The reversal of 2143732657 is 7562373412.

It is a cyclic number.

It is not a de Polignac number, because 2143732657 - 2³ = 2143732649 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2143732697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 274594 + ... + 282292.

It is an arithmetic number, because the mean of its divisors is an integer number (154885500).

Almost surely, 2^2143732657 is an apocalyptic number.

It is an amenable number.

2143732657 is a deficient number, since it is larger than the sum of its proper divisors (334435343).

2143732657 is a wasteful number, since it uses less digits than its factorization.

2143732657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9216.

The product of its digits is 211680, while the sum is 40.

The square root of 2143732657 is about 46300.4606564557. The cubic root of 2143732657 is about 1289.4075473905.

The spelling of 2143732657 in words is "two billion, one hundred forty-three million, seven hundred thirty-two thousand, six hundred fifty-seven".