30873590861 has 2 divisors, whose sum is σ = 30873590862. Its totient is φ = 30873590860.

The previous prime is 30873590771. The next prime is 30873590887. The reversal of 30873590861 is 16809537803.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29892335236 + 981255625 = 172894^2 + 31325^2 .

It is a cyclic number.

It is not a de Polignac number, because 30873590861 - 2¹⁰ = 30873589837 is a prime.

It is a super-2 number, since 2×30873590861² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30873595861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15436795430 + 15436795431.

It is an arithmetic number, because the mean of its divisors is an integer number (15436795431).

Almost surely, 2^30873590861 is an apocalyptic number.

It is an amenable number.

30873590861 is a deficient number, since it is larger than the sum of its proper divisors (1).

30873590861 is an equidigital number, since it uses as much as digits as its factorization.

30873590861 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1088640, while the sum is 50.

The spelling of 30873590861 in words is "thirty billion, eight hundred seventy-three million, five hundred ninety thousand, eight hundred sixty-one".