1375746643 has 2 divisors, whose sum is σ = 1375746644. Its totient is φ = 1375746642.

The previous prime is 1375746629. The next prime is 1375746649. The reversal of 1375746643 is 3466475731.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1375746643 - 2⁵ = 1375746611 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1375746593 and 1375746602.

It is not a weakly prime, because it can be changed into another prime (1375746649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 687873321 + 687873322.

It is an arithmetic number, because the mean of its divisors is an integer number (687873322).

Almost surely, 2^1375746643 is an apocalyptic number.

1375746643 is a deficient number, since it is larger than the sum of its proper divisors (1).

1375746643 is an equidigital number, since it uses as much as digits as its factorization.

1375746643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1270080, while the sum is 46.

The square root of 1375746643 is about 37091.0588012799. The cubic root of 1375746643 is about 1112.1912839145.

The spelling of 1375746643 in words is "one billion, three hundred seventy-five million, seven hundred forty-six thousand, six hundred forty-three".