1301318989 has 2 divisors, whose sum is σ = 1301318990. Its totient is φ = 1301318988.

The previous prime is 1301318983. The next prime is 1301319007. The reversal of 1301318989 is 9898131031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1155320100 + 145998889 = 33990^2 + 12083^2 .

It is an emirp because it is prime and its reverse (9898131031) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1301318989 - 2¹¹ = 1301316941 is a prime.

It is a super-2 number, since 2×1301318989² = 3386862222263964242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1301318983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 650659494 + 650659495.

It is an arithmetic number, because the mean of its divisors is an integer number (650659495).

Almost surely, 2^1301318989 is an apocalyptic number.

It is an amenable number.

1301318989 is a deficient number, since it is larger than the sum of its proper divisors (1).

1301318989 is an equidigital number, since it uses as much as digits as its factorization.

1301318989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46656, while the sum is 43.

The square root of 1301318989 is about 36073.7992038543. The cubic root of 1301318989 is about 1091.7618698887.

The spelling of 1301318989 in words is "one billion, three hundred one million, three hundred eighteen thousand, nine hundred eighty-nine".