30406081912949 has 2 divisors, whose sum is σ = 30406081912950. Its totient is φ = 30406081912948.

The previous prime is 30406081912897. The next prime is 30406081912967. The reversal of 30406081912949 is 94921918060403.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27060731172049 + 3345350740900 = 5201993^2 + 1829030^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30406081912949 is a prime.

It is a super-3 number, since 3×30406081912949³ (a number of 41 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 30406081912894 and 30406081912903.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30406081912979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15203040956474 + 15203040956475.

It is an arithmetic number, because the mean of its divisors is an integer number (15203040956475).

Almost surely, 2^{30406081912949} is an apocalyptic number.

It is an amenable number.

30406081912949 is a deficient number, since it is larger than the sum of its proper divisors (1).

30406081912949 is an equidigital number, since it uses as much as digits as its factorization.

30406081912949 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3359232, while the sum is 56.

The spelling of 30406081912949 in words is "thirty trillion, four hundred six billion, eighty-one million, nine hundred twelve thousand, nine hundred forty-nine".