1233378943 has 2 divisors, whose sum is σ = 1233378944. Its totient is φ = 1233378942.

The previous prime is 1233378941. The next prime is 1233378967. The reversal of 1233378943 is 3498733321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1233378943 - 2¹ = 1233378941 is a prime.

Together with 1233378941, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1233378943.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1233378941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 616689471 + 616689472.

It is an arithmetic number, because the mean of its divisors is an integer number (616689472).

Almost surely, 2^1233378943 is an apocalyptic number.

1233378943 is a deficient number, since it is larger than the sum of its proper divisors (1).

1233378943 is an equidigital number, since it uses as much as digits as its factorization.

1233378943 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 326592, while the sum is 43.

The square root of 1233378943 is about 35119.4951985361. The cubic root of 1233378943 is about 1072.4214943179.

It can be divided in two parts, 1233378 and 943, that added together give a palindrome (1234321).

The spelling of 1233378943 in words is "one billion, two hundred thirty-three million, three hundred seventy-eight thousand, nine hundred forty-three".