18074129 has 2 divisors, whose sum is σ = 18074130. Its totient is φ = 18074128.

The previous prime is 18074123. The next prime is 18074137. The reversal of 18074129 is 92147081.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11235904 + 6838225 = 3352^2 + 2615^2 .

It is a cyclic number.

It is not a de Polignac number, because 18074129 - 2²⁰ = 17025553 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18074095 and 18074104.

It is not a weakly prime, because it can be changed into another prime (18074123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9037064 + 9037065.

It is an arithmetic number, because the mean of its divisors is an integer number (9037065).

Almost surely, 2^18074129 is an apocalyptic number.

It is an amenable number.

18074129 is a deficient number, since it is larger than the sum of its proper divisors (1).

18074129 is an equidigital number, since it uses as much as digits as its factorization.

18074129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 32.

The square root of 18074129 is about 4251.3678975125. The cubic root of 18074129 is about 262.4334113789.

The spelling of 18074129 in words is "eighteen million, seventy-four thousand, one hundred twenty-nine".