29730000281 has 2 divisors, whose sum is σ = 29730000282. Its totient is φ = 29730000280.

The previous prime is 29730000229. The next prime is 29730000323. The reversal of 29730000281 is 18200003792.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27708598681 + 2021401600 = 166459^2 + 44960^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-29730000281 is a prime.

It is a super-2 number, since 2×29730000281² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (29730005281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14865000140 + 14865000141.

It is an arithmetic number, because the mean of its divisors is an integer number (14865000141).

Almost surely, 2^29730000281 is an apocalyptic number.

It is an amenable number.

29730000281 is a deficient number, since it is larger than the sum of its proper divisors (1).

29730000281 is an equidigital number, since it uses as much as digits as its factorization.

29730000281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 32.

The spelling of 29730000281 in words is "twenty-nine billion, seven hundred thirty million, two hundred eighty-one", and thus it is an aban number.