130949401981 has 2 divisors, whose sum is σ = 130949401982. Its totient is φ = 130949401980.

The previous prime is 130949401969. The next prime is 130949402021. The reversal of 130949401981 is 189104949031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 85363308900 + 45586093081 = 292170^2 + 213509^2 .

It is a cyclic number.

It is not a de Polignac number, because 130949401981 - 2²⁵ = 130915847549 is a prime.

It is a super-2 number, since 2×130949401981² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (130949401181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65474700990 + 65474700991.

It is an arithmetic number, because the mean of its divisors is an integer number (65474700991).

Almost surely, 2^130949401981 is an apocalyptic number.

It is an amenable number.

130949401981 is a deficient number, since it is larger than the sum of its proper divisors (1).

130949401981 is an equidigital number, since it uses as much as digits as its factorization.

130949401981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 279936, while the sum is 49.

The spelling of 130949401981 in words is "one hundred thirty billion, nine hundred forty-nine million, four hundred one thousand, nine hundred eighty-one".