1375645417 has 2 divisors, whose sum is σ = 1375645418. Its totient is φ = 1375645416.

The previous prime is 1375645399. The next prime is 1375645463. The reversal of 1375645417 is 7145465731.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1019908096 + 355737321 = 31936^2 + 18861^2 .

It is a cyclic number.

It is not a de Polignac number, because 1375645417 - 2¹¹ = 1375643369 is a prime.

It is not a weakly prime, because it can be changed into another prime (1375645477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 687822708 + 687822709.

It is an arithmetic number, because the mean of its divisors is an integer number (687822709).

Almost surely, 2^1375645417 is an apocalyptic number.

It is an amenable number.

1375645417 is a deficient number, since it is larger than the sum of its proper divisors (1).

1375645417 is an equidigital number, since it uses as much as digits as its factorization.

1375645417 is an evil number, because the sum of its binary digits is even.

The product of its digits is 352800, while the sum is 43.

The square root of 1375645417 is about 37089.6942155095. The cubic root of 1375645417 is about 1112.1640052881.

The spelling of 1375645417 in words is "one billion, three hundred seventy-five million, six hundred forty-five thousand, four hundred seventeen".