18014081 has 2 divisors, whose sum is σ = 18014082. Its totient is φ = 18014080.

The previous prime is 18014063. The next prime is 18014107. The reversal of 18014081 is 18041081.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17977600 + 36481 = 4240^2 + 191^2 .

It is an emirp because it is prime and its reverse (18041081) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18014081 is a prime.

It is a super-2 number, since 2×18014081² = 649014228549122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (18014021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9007040 + 9007041.

It is an arithmetic number, because the mean of its divisors is an integer number (9007041).

Almost surely, 2^18014081 is an apocalyptic number.

It is an amenable number.

18014081 is a deficient number, since it is larger than the sum of its proper divisors (1).

18014081 is an equidigital number, since it uses as much as digits as its factorization.

18014081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 256, while the sum is 23.

The square root of 18014081 is about 4244.2998244705. The cubic root of 18014081 is about 262.1424598673.

Subtracting 18014081 from its reverse (18041081), we obtain a cube (27000 = 30³).

The spelling of 18014081 in words is "eighteen million, fourteen thousand, eighty-one".