18512029 has 2 divisors, whose sum is σ = 18512030. Its totient is φ = 18512028.

The previous prime is 18511979. The next prime is 18512047. The reversal of 18512029 is 92021581.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16999129 + 1512900 = 4123^2 + 1230^2 .

It is an emirp because it is prime and its reverse (92021581) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18512029 - 2¹⁵ = 18479261 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18511988 and 18512006.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18512069) 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, 9256014 + 9256015.

It is an arithmetic number, because the mean of its divisors is an integer number (9256015).

Almost surely, 2^18512029 is an apocalyptic number.

It is an amenable number.

18512029 is a deficient number, since it is larger than the sum of its proper divisors (1).

18512029 is an equidigital number, since it uses as much as digits as its factorization.

18512029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 28.

The square root of 18512029 is about 4302.5607491353. The cubic root of 18512029 is about 264.5359339784.

The spelling of 18512029 in words is "eighteen million, five hundred twelve thousand, twenty-nine".