30007172749 has 2 divisors, whose sum is σ = 30007172750. Its totient is φ = 30007172748.

The previous prime is 30007172731. The next prime is 30007172759. The reversal of 30007172749 is 94727170003.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20242175625 + 9764997124 = 142275^2 + 98818^2 .

It is a cyclic number.

It is not a de Polignac number, because 30007172749 - 2¹³ = 30007164557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30007172759) 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, 15003586374 + 15003586375.

It is an arithmetic number, because the mean of its divisors is an integer number (15003586375).

Almost surely, 2^30007172749 is an apocalyptic number.

It is an amenable number.

30007172749 is a deficient number, since it is larger than the sum of its proper divisors (1).

30007172749 is an equidigital number, since it uses as much as digits as its factorization.

30007172749 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 74088, while the sum is 40.

The spelling of 30007172749 in words is "thirty billion, seven million, one hundred seventy-two thousand, seven hundred forty-nine".