18934117 has 2 divisors, whose sum is σ = 18934118. Its totient is φ = 18934116.

The previous prime is 18934081. The next prime is 18934177. The reversal of 18934117 is 71143981.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18931201 + 2916 = 4351^2 + 54^2 .

It is a cyclic number.

It is not a de Polignac number, because 18934117 - 2¹⁵ = 18901349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18934177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9467058 + 9467059.

It is an arithmetic number, because the mean of its divisors is an integer number (9467059).

Almost surely, 2^18934117 is an apocalyptic number.

It is an amenable number.

18934117 is a deficient number, since it is larger than the sum of its proper divisors (1).

18934117 is an equidigital number, since it uses as much as digits as its factorization.

18934117 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6048, while the sum is 34.

The square root of 18934117 is about 4351.3350824776. The cubic root of 18934117 is about 266.5313825952.

The spelling of 18934117 in words is "eighteen million, nine hundred thirty-four thousand, one hundred seventeen".