130319989 has 2 divisors, whose sum is σ = 130319990. Its totient is φ = 130319988.

The previous prime is 130319983. The next prime is 130319999. The reversal of 130319989 is 989913031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 80730225 + 49589764 = 8985^2 + 7042^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-130319989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (130319983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65159994 + 65159995.

It is an arithmetic number, because the mean of its divisors is an integer number (65159995).

Almost surely, 2^130319989 is an apocalyptic number.

It is an amenable number.

130319989 is a deficient number, since it is larger than the sum of its proper divisors (1).

130319989 is an equidigital number, since it uses as much as digits as its factorization.

130319989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 52488, while the sum is 43.

The square root of 130319989 is about 11415.7780724750. The cubic root of 130319989 is about 506.9950022006.

The spelling of 130319989 in words is "one hundred thirty million, three hundred nineteen thousand, nine hundred eighty-nine".