1238630143 has 2 divisors, whose sum is σ = 1238630144. Its totient is φ = 1238630142.

The previous prime is 1238630119. The next prime is 1238630191. The reversal of 1238630143 is 3410368321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1238630143 - 2²⁹ = 701759231 is a prime.

It is a super-2 number, since 2×1238630143² = 3068409262296400898, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1238631143) 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 as a sum of consecutive naturals, namely, 619315071 + 619315072.

It is an arithmetic number, because the mean of its divisors is an integer number (619315072).

Almost surely, 2^1238630143 is an apocalyptic number.

1238630143 is a deficient number, since it is larger than the sum of its proper divisors (1).

1238630143 is an equidigital number, since it uses as much as digits as its factorization.

1238630143 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 1238630143 is about 35194.1776860889. The cubic root of 1238630143 is about 1073.9413101218.

Adding to 1238630143 its reverse (3410368321), we get a palindrome (4648998464).

The spelling of 1238630143 in words is "one billion, two hundred thirty-eight million, six hundred thirty thousand, one hundred forty-three".