30442155389 has 2 divisors, whose sum is σ = 30442155390. Its totient is φ = 30442155388.

The previous prime is 30442155329. The next prime is 30442155427. The reversal of 30442155389 is 98355124403.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23608322500 + 6833832889 = 153650^2 + 82667^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30442155389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30442155329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15221077694 + 15221077695.

It is an arithmetic number, because the mean of its divisors is an integer number (15221077695).

Almost surely, 2^30442155389 is an apocalyptic number.

It is an amenable number.

30442155389 is a deficient number, since it is larger than the sum of its proper divisors (1).

30442155389 is an equidigital number, since it uses as much as digits as its factorization.

30442155389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 518400, while the sum is 44.

The spelling of 30442155389 in words is "thirty billion, four hundred forty-two million, one hundred fifty-five thousand, three hundred eighty-nine".