1236232643 has 2 divisors, whose sum is σ = 1236232644. Its totient is φ = 1236232642.

The previous prime is 1236232633. The next prime is 1236232667. The reversal of 1236232643 is 3462326321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1236232643 - 2¹² = 1236228547 is a prime.

It is a super-2 number, since 2×1236232643² = 3056542295237530898, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1236232603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 618116321 + 618116322.

It is an arithmetic number, because the mean of its divisors is an integer number (618116322).

Almost surely, 2^1236232643 is an apocalyptic number.

1236232643 is a deficient number, since it is larger than the sum of its proper divisors (1).

1236232643 is an equidigital number, since it uses as much as digits as its factorization.

1236232643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31104, while the sum is 32.

The square root of 1236232643 is about 35160.1001562851. The cubic root of 1236232643 is about 1073.2479534745.

Adding to 1236232643 its reverse (3462326321), we get a palindrome (4698558964).

The spelling of 1236232643 in words is "one billion, two hundred thirty-six million, two hundred thirty-two thousand, six hundred forty-three".