949581205987 has 2 divisors, whose sum is σ = 949581205988. Its totient is φ = 949581205986.

The previous prime is 949581205973. The next prime is 949581206027. The reversal of 949581205987 is 789502185949.

It is a weak prime.

It is an emirp because it is prime and its reverse (789502185949) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-949581205987 is a prime.

It is not a weakly prime, because it can be changed into another prime (949581205907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 474790602993 + 474790602994.

It is an arithmetic number, because the mean of its divisors is an integer number (474790602994).

Almost surely, 2^949581205987 is an apocalyptic number.

949581205987 is a deficient number, since it is larger than the sum of its proper divisors (1).

949581205987 is an equidigital number, since it uses as much as digits as its factorization.

949581205987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 65318400, while the sum is 67.

The spelling of 949581205987 in words is "nine hundred forty-nine billion, five hundred eighty-one million, two hundred five thousand, nine hundred eighty-seven".