1305416663 has 4 divisors (see below), whose sum is σ = 1305518928. Its totient is φ = 1305314400.

The previous prime is 1305416639. The next prime is 1305416669. The reversal of 1305416663 is 3666145031.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 3666145031 = 1663 ⋅2204537.

It is a cyclic number.

It is not a de Polignac number, because 1305416663 - 2⁸ = 1305416407 is a prime.

It is a super-2 number, since 2×1305416663² = 3408225328076111138, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1305416669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28706 + ... + 58607.

It is an arithmetic number, because the mean of its divisors is an integer number (326379732).

Almost surely, 2^1305416663 is an apocalyptic number.

1305416663 is a deficient number, since it is larger than the sum of its proper divisors (102265).

1305416663 is an equidigital number, since it uses as much as digits as its factorization.

1305416663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102264.

The product of its (nonzero) digits is 38880, while the sum is 35.

The square root of 1305416663 is about 36130.5502725879. The cubic root of 1305416663 is about 1092.9066050361.

The spelling of 1305416663 in words is "one billion, three hundred five million, four hundred sixteen thousand, six hundred sixty-three".