130648981 has 2 divisors, whose sum is σ = 130648982. Its totient is φ = 130648980.

The previous prime is 130648979. The next prime is 130649023. The reversal of 130648981 is 189846031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 92332881 + 38316100 = 9609^2 + 6190^2 .

It is a cyclic number.

It is not a de Polignac number, because 130648981 - 2¹ = 130648979 is a prime.

It is a super-2 number, since 2×130648981² = 34138312472676722, which contains 22 as substring.

Together with 130648979, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (130648081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65324490 + 65324491.

It is an arithmetic number, because the mean of its divisors is an integer number (65324491).

Almost surely, 2^130648981 is an apocalyptic number.

It is an amenable number.

130648981 is a deficient number, since it is larger than the sum of its proper divisors (1).

130648981 is an equidigital number, since it uses as much as digits as its factorization.

130648981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 41472, while the sum is 40.

The square root of 130648981 is about 11430.1785200407. The cubic root of 130648981 is about 507.4212789317.

The spelling of 130648981 in words is "one hundred thirty million, six hundred forty-eight thousand, nine hundred eighty-one".