2143875247 has 2 divisors, whose sum is σ = 2143875248. Its totient is φ = 2143875246.

The previous prime is 2143875197. The next prime is 2143875263. The reversal of 2143875247 is 7425783412.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2143875247 is a prime.

It is a super-2 number, since 2×2143875247² = 9192402149398622018, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2143875347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1071937623 + 1071937624.

It is an arithmetic number, because the mean of its divisors is an integer number (1071937624).

Almost surely, 2^2143875247 is an apocalyptic number.

2143875247 is a deficient number, since it is larger than the sum of its proper divisors (1).

2143875247 is an equidigital number, since it uses as much as digits as its factorization.

2143875247 is an evil number, because the sum of its binary digits is even.

The product of its digits is 376320, while the sum is 43.

The square root of 2143875247 is about 46302.0004643428. Note that the first 3 decimals coincide. The cubic root of 2143875247 is about 1289.4361349953.

Subtracting from 2143875247 its sum of digits (43), we obtain a square (2143875204 = 46302²).

The spelling of 2143875247 in words is "two billion, one hundred forty-three million, eight hundred seventy-five thousand, two hundred forty-seven".