1938329742343 has 2 divisors, whose sum is σ = 1938329742344. Its totient is φ = 1938329742342.

The previous prime is 1938329742329. The next prime is 1938329742451. The reversal of 1938329742343 is 3432479238391.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1938329742343 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1938329742043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 969164871171 + 969164871172.

It is an arithmetic number, because the mean of its divisors is an integer number (969164871172).

Almost surely, 2^{1938329742343} is an apocalyptic number.

1938329742343 is a deficient number, since it is larger than the sum of its proper divisors (1).

1938329742343 is an equidigital number, since it uses as much as digits as its factorization.

1938329742343 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23514624, while the sum is 58.

The spelling of 1938329742343 in words is "one trillion, nine hundred thirty-eight billion, three hundred twenty-nine million, seven hundred forty-two thousand, three hundred forty-three".