30947790719 has 2 divisors, whose sum is σ = 30947790720. Its totient is φ = 30947790718.

The previous prime is 30947790701. The next prime is 30947790763. The reversal of 30947790719 is 91709774903.

It is a weak prime.

It is an emirp because it is prime and its reverse (91709774903) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30947790719 is a prime.

It is a super-4 number, since 4×30947790719⁴ (a number of 43 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30947790019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15473895359 + 15473895360.

It is an arithmetic number, because the mean of its divisors is an integer number (15473895360).

Almost surely, 2^30947790719 is an apocalyptic number.

30947790719 is a deficient number, since it is larger than the sum of its proper divisors (1).

30947790719 is an equidigital number, since it uses as much as digits as its factorization.

30947790719 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3000564, while the sum is 56.

The spelling of 30947790719 in words is "thirty billion, nine hundred forty-seven million, seven hundred ninety thousand, seven hundred nineteen".