1340103893 has 4 divisors (see below), whose sum is σ = 1344873228. Its totient is φ = 1335334560.

The previous prime is 1340103881. The next prime is 1340103899. The reversal of 1340103893 is 3983010431.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 453136369 + 886967524 = 21287^2 + 29782^2 .

It is a cyclic number.

It is not a de Polignac number, because 1340103893 - 2⁸ = 1340103637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1340103899) 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 in 3 ways as a sum of consecutive naturals, for example, 2384246 + ... + 2384807.

It is an arithmetic number, because the mean of its divisors is an integer number (336218307).

Almost surely, 2^1340103893 is an apocalyptic number.

It is an amenable number.

1340103893 is a deficient number, since it is larger than the sum of its proper divisors (4769335).

1340103893 is an equidigital number, since it uses as much as digits as its factorization.

1340103893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4769334.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 1340103893 is about 36607.4294781811. The cubic root of 1340103893 is about 1102.5022630785.

The spelling of 1340103893 in words is "one billion, three hundred forty million, one hundred three thousand, eight hundred ninety-three".