1951485563 has 2 divisors, whose sum is σ = 1951485564. Its totient is φ = 1951485562.

The previous prime is 1951485541. The next prime is 1951485589. The reversal of 1951485563 is 3655841591.

It is a weak prime.

It is an emirp because it is prime and its reverse (3655841591) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1951485563 is a prime.

It is not a weakly prime, because it can be changed into another prime (1951485463) 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, 975742781 + 975742782.

It is an arithmetic number, because the mean of its divisors is an integer number (975742782).

Almost surely, 2^1951485563 is an apocalyptic number.

1951485563 is a deficient number, since it is larger than the sum of its proper divisors (1).

1951485563 is an equidigital number, since it uses as much as digits as its factorization.

1951485563 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 648000, while the sum is 47.

The square root of 1951485563 is about 44175.6218179213. The cubic root of 1951485563 is about 1249.6501555362.

The spelling of 1951485563 in words is "one billion, nine hundred fifty-one million, four hundred eighty-five thousand, five hundred sixty-three".