18186018441 has 8 divisors (see below), whose sum is σ = 24261600864. Its totient is φ = 12117224160.

The previous prime is 18186018439. The next prime is 18186018443. The reversal of 18186018441 is 14481068181.

It is an interprime number because it is at equal distance from previous prime (18186018439) and next prime (18186018443).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 18186018441 - 2¹ = 18186018439 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18186018393 and 18186018402.

It is not an unprimeable number, because it can be changed into a prime (18186018443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1690780 + ... + 1701501.

It is an arithmetic number, because the mean of its divisors is an integer number (3032700108).

Almost surely, 2^18186018441 is an apocalyptic number.

It is an amenable number.

18186018441 is a deficient number, since it is larger than the sum of its proper divisors (6075582423).

18186018441 is a wasteful number, since it uses less digits than its factorization.

18186018441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3394071.

The product of its (nonzero) digits is 49152, while the sum is 42.

The spelling of 18186018441 in words is "eighteen billion, one hundred eighty-six million, eighteen thousand, four hundred forty-one".