130509949 has 2 divisors, whose sum is σ = 130509950. Its totient is φ = 130509948.

The previous prime is 130509937. The next prime is 130509983. The reversal of 130509949 is 949905031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 67815225 + 62694724 = 8235^2 + 7918^2 .

It is a cyclic number.

It is not a de Polignac number, because 130509949 - 2¹³ = 130501757 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (130509919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65254974 + 65254975.

It is an arithmetic number, because the mean of its divisors is an integer number (65254975).

Almost surely, 2^130509949 is an apocalyptic number.

It is an amenable number.

130509949 is a deficient number, since it is larger than the sum of its proper divisors (1).

130509949 is an equidigital number, since it uses as much as digits as its factorization.

130509949 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 43740, while the sum is 40.

The square root of 130509949 is about 11424.0951063968. The cubic root of 130509949 is about 507.2412218190.

The spelling of 130509949 in words is "one hundred thirty million, five hundred nine thousand, nine hundred forty-nine".