30442839187 has 2 divisors, whose sum is σ = 30442839188. Its totient is φ = 30442839186.

The previous prime is 30442839179. The next prime is 30442839209. The reversal of 30442839187 is 78193824403.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 30442839187 - 2³ = 30442839179 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30442839187.

It is not a weakly prime, because it can be changed into another prime (30442839127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15221419593 + 15221419594.

It is an arithmetic number, because the mean of its divisors is an integer number (15221419594).

Almost surely, 2^30442839187 is an apocalyptic number.

30442839187 is a deficient number, since it is larger than the sum of its proper divisors (1).

30442839187 is an equidigital number, since it uses as much as digits as its factorization.

30442839187 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1161216, while the sum is 49.

The spelling of 30442839187 in words is "thirty billion, four hundred forty-two million, eight hundred thirty-nine thousand, one hundred eighty-seven".