18870225167 has 2 divisors, whose sum is σ = 18870225168. Its totient is φ = 18870225166.

The previous prime is 18870225103. The next prime is 18870225223. The reversal of 18870225167 is 76152207881.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18870225167 - 2⁶ = 18870225103 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18870225467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9435112583 + 9435112584.

It is an arithmetic number, because the mean of its divisors is an integer number (9435112584).

Almost surely, 2^18870225167 is an apocalyptic number.

18870225167 is a deficient number, since it is larger than the sum of its proper divisors (1).

18870225167 is an equidigital number, since it uses as much as digits as its factorization.

18870225167 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 376320, while the sum is 47.

The spelling of 18870225167 in words is "eighteen billion, eight hundred seventy million, two hundred twenty-five thousand, one hundred sixty-seven".