1628243143 has 2 divisors, whose sum is σ = 1628243144. Its totient is φ = 1628243142.

The previous prime is 1628243087. The next prime is 1628243189. The reversal of 1628243143 is 3413428261.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1628243143 - 2²⁹ = 1091372231 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1628243099 and 1628243108.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1628243443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 814121571 + 814121572.

It is an arithmetic number, because the mean of its divisors is an integer number (814121572).

Almost surely, 2^1628243143 is an apocalyptic number.

1628243143 is a deficient number, since it is larger than the sum of its proper divisors (1).

1628243143 is an equidigital number, since it uses as much as digits as its factorization.

1628243143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27648, while the sum is 34.

The square root of 1628243143 is about 40351.4949289366. The cubic root of 1628243143 is about 1176.4489486980.

The spelling of 1628243143 in words is "one billion, six hundred twenty-eight million, two hundred forty-three thousand, one hundred forty-three".