1375393843 has 2 divisors, whose sum is σ = 1375393844. Its totient is φ = 1375393842.

The previous prime is 1375393801. The next prime is 1375393879. The reversal of 1375393843 is 3483935731.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1375393843 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1375393793 and 1375393802.

It is not a weakly prime, because it can be changed into another prime (1375393343) 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, 687696921 + 687696922.

It is an arithmetic number, because the mean of its divisors is an integer number (687696922).

Almost surely, 2^1375393843 is an apocalyptic number.

1375393843 is a deficient number, since it is larger than the sum of its proper divisors (1).

1375393843 is an equidigital number, since it uses as much as digits as its factorization.

1375393843 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 816480, while the sum is 46.

The square root of 1375393843 is about 37086.3026331825. The cubic root of 1375393843 is about 1112.0962047242.

The spelling of 1375393843 in words is "one billion, three hundred seventy-five million, three hundred ninety-three thousand, eight hundred forty-three".