30487857941 has 2 divisors, whose sum is σ = 30487857942. Its totient is φ = 30487857940.

The previous prime is 30487857863. The next prime is 30487857973. The reversal of 30487857941 is 14975878403.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28200149041 + 2287708900 = 167929^2 + 47830^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30487857941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30487857041) 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, 15243928970 + 15243928971.

It is an arithmetic number, because the mean of its divisors is an integer number (15243928971).

Almost surely, 2^30487857941 is an apocalyptic number.

It is an amenable number.

30487857941 is a deficient number, since it is larger than the sum of its proper divisors (1).

30487857941 is an equidigital number, since it uses as much as digits as its factorization.

30487857941 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6773760, while the sum is 56.

The spelling of 30487857941 in words is "thirty billion, four hundred eighty-seven million, eight hundred fifty-seven thousand, nine hundred forty-one".