1518643963 has 2 divisors, whose sum is σ = 1518643964. Its totient is φ = 1518643962.

The previous prime is 1518643937. The next prime is 1518643981. The reversal of 1518643963 is 3693468151.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1518643963 is a prime.

It is not a weakly prime, because it can be changed into another prime (1518643933) 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, 759321981 + 759321982.

It is an arithmetic number, because the mean of its divisors is an integer number (759321982).

Almost surely, 2^1518643963 is an apocalyptic number.

1518643963 is a deficient number, since it is larger than the sum of its proper divisors (1).

1518643963 is an equidigital number, since it uses as much as digits as its factorization.

1518643963 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 466560, while the sum is 46.

The square root of 1518643963 is about 38969.7826912083. The cubic root of 1518643963 is about 1149.4373966415.

The spelling of 1518643963 in words is "one billion, five hundred eighteen million, six hundred forty-three thousand, nine hundred sixty-three".