130857989 has 2 divisors, whose sum is σ = 130857990. Its totient is φ = 130857988.

The previous prime is 130857977. The next prime is 130858001. The reversal of 130857989 is 989758031.

It is a balanced prime because it is at equal distance from previous prime (130857977) and next prime (130858001).

It can be written as a sum of positive squares in only one way, i.e., 95550625 + 35307364 = 9775^2 + 5942^2 .

It is a cyclic number.

It is not a de Polignac number, because 130857989 - 2⁴ = 130857973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (130857919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65428994 + 65428995.

It is an arithmetic number, because the mean of its divisors is an integer number (65428995).

Almost surely, 2^130857989 is an apocalyptic number.

It is an amenable number.

130857989 is a deficient number, since it is larger than the sum of its proper divisors (1).

130857989 is an equidigital number, since it uses as much as digits as its factorization.

130857989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 544320, while the sum is 50.

The square root of 130857989 is about 11439.3176807011. The cubic root of 130857989 is about 507.6917201336.

The spelling of 130857989 in words is "one hundred thirty million, eight hundred fifty-seven thousand, nine hundred eighty-nine".