18935225123 has 2 divisors, whose sum is σ = 18935225124. Its totient is φ = 18935225122.

The previous prime is 18935225083. The next prime is 18935225131. The reversal of 18935225123 is 32152253981.

It is a strong prime.

It is an emirp because it is prime and its reverse (32152253981) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18935225123 - 2¹⁴ = 18935208739 is a prime.

It is not a weakly prime, because it can be changed into another prime (18635225123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9467612561 + 9467612562.

It is an arithmetic number, because the mean of its divisors is an integer number (9467612562).

Almost surely, 2^18935225123 is an apocalyptic number.

18935225123 is a deficient number, since it is larger than the sum of its proper divisors (1).

18935225123 is an equidigital number, since it uses as much as digits as its factorization.

18935225123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 129600, while the sum is 41.

The spelling of 18935225123 in words is "eighteen billion, nine hundred thirty-five million, two hundred twenty-five thousand, one hundred twenty-three".