1340443713438 has 12 divisors (see below), whose sum is σ = 2904294712488. Its totient is φ = 446814571140.

The previous prime is 1340443713437. The next prime is 1340443713473. The reversal of 1340443713438 is 8343173440431.

1340443713438 is a `hidden beast` number, since 1 + 3 + 40 + 443 + 7 + 134 + 38 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 1340443713393 and 1340443713402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1340443713437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 37234547578 + ... + 37234547613.

It is an arithmetic number, because the mean of its divisors is an integer number (242024559374).

Almost surely, 2^{1340443713438} is an apocalyptic number.

1340443713438 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1340443713438 is an abundant number, since it is smaller than the sum of its proper divisors (1563850999050).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1340443713438 is a wasteful number, since it uses less digits than its factorization.

1340443713438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74469095199 (or 74469095196 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 45.

The spelling of 1340443713438 in words is "one trillion, three hundred forty billion, four hundred forty-three million, seven hundred thirteen thousand, four hundred thirty-eight".