18148111 has 2 divisors, whose sum is σ = 18148112. Its totient is φ = 18148110.

The previous prime is 18148103. The next prime is 18148133. The reversal of 18148111 is 11184181.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18148111 - 2³ = 18148103 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18148181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9074055 + 9074056.

It is an arithmetic number, because the mean of its divisors is an integer number (9074056).

Almost surely, 2^18148111 is an apocalyptic number.

18148111 is a deficient number, since it is larger than the sum of its proper divisors (1).

18148111 is an equidigital number, since it uses as much as digits as its factorization.

18148111 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 256, while the sum is 25.

The square root of 18148111 is about 4260.0599761036. The cubic root of 18148111 is about 262.7909927976.

The spelling of 18148111 in words is "eighteen million, one hundred forty-eight thousand, one hundred eleven".