2146657143 has 4 divisors (see below), whose sum is σ = 2862209528. Its totient is φ = 1431104760.

The previous prime is 2146657141. The next prime is 2146657147. The reversal of 2146657143 is 3417566412.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2146657143 - 2¹ = 2146657141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2146657141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 357776188 + ... + 357776193.

It is an arithmetic number, because the mean of its divisors is an integer number (715552382).

Almost surely, 2^2146657143 is an apocalyptic number.

2146657143 is a deficient number, since it is larger than the sum of its proper divisors (715552385).

2146657143 is an equidigital number, since it uses as much as digits as its factorization.

2146657143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 715552384.

The product of its digits is 120960, while the sum is 39.

The square root of 2146657143 is about 46332.0315008958. The cubic root of 2146657143 is about 1289.9936187413.

The spelling of 2146657143 in words is "two billion, one hundred forty-six million, six hundred fifty-seven thousand, one hundred forty-three".