18481741 has 2 divisors, whose sum is σ = 18481742. Its totient is φ = 18481740.

The previous prime is 18481721. The next prime is 18481747. The reversal of 18481741 is 14718481.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18275625 + 206116 = 4275^2 + 454^2 .

It is a cyclic number.

It is not a de Polignac number, because 18481741 - 2⁵ = 18481709 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18481697 and 18481706.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18481747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9240870 + 9240871.

It is an arithmetic number, because the mean of its divisors is an integer number (9240871).

Almost surely, 2^18481741 is an apocalyptic number.

It is an amenable number.

18481741 is a deficient number, since it is larger than the sum of its proper divisors (1).

18481741 is an equidigital number, since it uses as much as digits as its factorization.

18481741 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7168, while the sum is 34.

The square root of 18481741 is about 4299.0395438981. The cubic root of 18481741 is about 264.3915839087.

The spelling of 18481741 in words is "eighteen million, four hundred eighty-one thousand, seven hundred forty-one".