1301966563 has 2 divisors, whose sum is σ = 1301966564. Its totient is φ = 1301966562.

The previous prime is 1301966537. The next prime is 1301966593. The reversal of 1301966563 is 3656691031.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1301966563 is a prime.

It is not a weakly prime, because it can be changed into another prime (1301966503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 650983281 + 650983282.

It is an arithmetic number, because the mean of its divisors is an integer number (650983282).

Almost surely, 2^1301966563 is an apocalyptic number.

1301966563 is a deficient number, since it is larger than the sum of its proper divisors (1).

1301966563 is an equidigital number, since it uses as much as digits as its factorization.

1301966563 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 87480, while the sum is 40.

The square root of 1301966563 is about 36082.7737708730. The cubic root of 1301966563 is about 1091.9429372943.

The spelling of 1301966563 in words is "one billion, three hundred one million, nine hundred sixty-six thousand, five hundred sixty-three".