30946620491 has 2 divisors, whose sum is σ = 30946620492. Its totient is φ = 30946620490.

The previous prime is 30946620487. The next prime is 30946620521. The reversal of 30946620491 is 19402664903.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 30946620491 - 2² = 30946620487 is a prime.

It is not a weakly prime, because it can be changed into another prime (30946622491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15473310245 + 15473310246.

It is an arithmetic number, because the mean of its divisors is an integer number (15473310246).

Almost surely, 2^30946620491 is an apocalyptic number.

30946620491 is a deficient number, since it is larger than the sum of its proper divisors (1).

30946620491 is an equidigital number, since it uses as much as digits as its factorization.

30946620491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 279936, while the sum is 44.

The spelling of 30946620491 in words is "thirty billion, nine hundred forty-six million, six hundred twenty thousand, four hundred ninety-one".