18625803047 has 2 divisors, whose sum is σ = 18625803048. Its totient is φ = 18625803046.

The previous prime is 18625803019. The next prime is 18625803083. The reversal of 18625803047 is 74030852681.

It is a weak prime.

It is an emirp because it is prime and its reverse (74030852681) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18625803047 - 2⁸ = 18625802791 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18625802989 and 18625803007.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18625802047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9312901523 + 9312901524.

It is an arithmetic number, because the mean of its divisors is an integer number (9312901524).

Almost surely, 2^18625803047 is an apocalyptic number.

18625803047 is a deficient number, since it is larger than the sum of its proper divisors (1).

18625803047 is an equidigital number, since it uses as much as digits as its factorization.

18625803047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 322560, while the sum is 44.

The spelling of 18625803047 in words is "eighteen billion, six hundred twenty-five million, eight hundred three thousand, forty-seven".