1316624987 has 2 divisors, whose sum is σ = 1316624988. Its totient is φ = 1316624986.

The previous prime is 1316624921. The next prime is 1316625017. The reversal of 1316624987 is 7894266131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1316624987 - 2¹⁰ = 1316623963 is a prime.

It is not a weakly prime, because it can be changed into another prime (1316627987) 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, 658312493 + 658312494.

It is an arithmetic number, because the mean of its divisors is an integer number (658312494).

Almost surely, 2^1316624987 is an apocalyptic number.

1316624987 is a deficient number, since it is larger than the sum of its proper divisors (1).

1316624987 is an equidigital number, since it uses as much as digits as its factorization.

1316624987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 435456, while the sum is 47.

The square root of 1316624987 is about 36285.3274341021. The cubic root of 1316624987 is about 1096.0255987392.

The spelling of 1316624987 in words is "one billion, three hundred sixteen million, six hundred twenty-four thousand, nine hundred eighty-seven".