1238202923 has 2 divisors, whose sum is σ = 1238202924. Its totient is φ = 1238202922.

The previous prime is 1238202893. The next prime is 1238202941. The reversal of 1238202923 is 3292028321.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1238202923 - 2¹² = 1238198827 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1238202923.

It is not a weakly prime, because it can be changed into another prime (1238202943) 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, 619101461 + 619101462.

It is an arithmetic number, because the mean of its divisors is an integer number (619101462).

Almost surely, 2^1238202923 is an apocalyptic number.

1238202923 is a deficient number, since it is larger than the sum of its proper divisors (1).

1238202923 is an equidigital number, since it uses as much as digits as its factorization.

1238202923 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 32.

The square root of 1238202923 is about 35188.1076927987. The cubic root of 1238202923 is about 1073.8178237125.

The spelling of 1238202923 in words is "one billion, two hundred thirty-eight million, two hundred two thousand, nine hundred twenty-three".