18235785079 has 2 divisors, whose sum is σ = 18235785080. Its totient is φ = 18235785078.

The previous prime is 18235785067. The next prime is 18235785103. The reversal of 18235785079 is 97058753281.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18235785079 - 2¹³ = 18235776887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18235785019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9117892539 + 9117892540.

It is an arithmetic number, because the mean of its divisors is an integer number (9117892540).

Almost surely, 2^18235785079 is an apocalyptic number.

18235785079 is a deficient number, since it is larger than the sum of its proper divisors (1).

18235785079 is an equidigital number, since it uses as much as digits as its factorization.

18235785079 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4233600, while the sum is 55.

The spelling of 18235785079 in words is "eighteen billion, two hundred thirty-five million, seven hundred eighty-five thousand, seventy-nine".