1243938083 has 2 divisors, whose sum is σ = 1243938084. Its totient is φ = 1243938082.

The previous prime is 1243938043. The next prime is 1243938109. The reversal of 1243938083 is 3808393421.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1243938083 - 2²⁴ = 1227160867 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1243938083.

It is not a weakly prime, because it can be changed into another prime (1243938043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 621969041 + 621969042.

It is an arithmetic number, because the mean of its divisors is an integer number (621969042).

Almost surely, 2^1243938083 is an apocalyptic number.

1243938083 is a deficient number, since it is larger than the sum of its proper divisors (1).

1243938083 is an equidigital number, since it uses as much as digits as its factorization.

1243938083 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 124416, while the sum is 41.

The square root of 1243938083 is about 35269.5064184346. The cubic root of 1243938083 is about 1075.4731886187.

The spelling of 1243938083 in words is "one billion, two hundred forty-three million, nine hundred thirty-eight thousand, eighty-three".