18018382246741 has 4 divisors (see below), whose sum is σ = 18066688901932. Its totient is φ = 17970075591552.

The previous prime is 18018382246727. The next prime is 18018382246759. The reversal of 18018382246741 is 14764228381081.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12077390364516 + 5940991882225 = 3475254^2 + 2437415^2 .

It is a cyclic number.

It is not a de Polignac number, because 18018382246741 - 2⁹ = 18018382246229 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18018382244741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24153327036 + ... + 24153327781.

It is an arithmetic number, because the mean of its divisors is an integer number (4516672225483).

Almost surely, 2^{18018382246741} is an apocalyptic number.

It is an amenable number.

18018382246741 is a deficient number, since it is larger than the sum of its proper divisors (48306655191).

18018382246741 is an equidigital number, since it uses as much as digits as its factorization.

18018382246741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48306655190.

The product of its (nonzero) digits is 4128768, while the sum is 55.

The spelling of 18018382246741 in words is "eighteen trillion, eighteen billion, three hundred eighty-two million, two hundred forty-six thousand, seven hundred forty-one".