130621189 has 2 divisors, whose sum is σ = 130621190. Its totient is φ = 130621188.

The previous prime is 130621177. The next prime is 130621193. The reversal of 130621189 is 981126031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 124144164 + 6477025 = 11142^2 + 2545^2 .

It is an emirp because it is prime and its reverse (981126031) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 130621189 - 2⁷ = 130621061 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 130621189.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (130621109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65310594 + 65310595.

It is an arithmetic number, because the mean of its divisors is an integer number (65310595).

Almost surely, 2^130621189 is an apocalyptic number.

It is an amenable number.

130621189 is a deficient number, since it is larger than the sum of its proper divisors (1).

130621189 is an equidigital number, since it uses as much as digits as its factorization.

130621189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 130621189 is about 11428.9627263370. The cubic root of 130621189 is about 507.3852963771.

The spelling of 130621189 in words is "one hundred thirty million, six hundred twenty-one thousand, one hundred eighty-nine".