1371245563 has 2 divisors, whose sum is σ = 1371245564. Its totient is φ = 1371245562.

The previous prime is 1371245549. The next prime is 1371245587. The reversal of 1371245563 is 3655421731.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1371245563 is a prime.

It is not a weakly prime, because it can be changed into another prime (1371245593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 685622781 + 685622782.

It is an arithmetic number, because the mean of its divisors is an integer number (685622782).

Almost surely, 2^1371245563 is an apocalyptic number.

1371245563 is a deficient number, since it is larger than the sum of its proper divisors (1).

1371245563 is an equidigital number, since it uses as much as digits as its factorization.

1371245563 is an evil number, because the sum of its binary digits is even.

The product of its digits is 75600, while the sum is 37.

The square root of 1371245563 is about 37030.3330122752. Note that the first 3 decimals coincide. The cubic root of 1371245563 is about 1110.9770265706.

The spelling of 1371245563 in words is "one billion, three hundred seventy-one million, two hundred forty-five thousand, five hundred sixty-three".