18147117741 has 4 divisors (see below), whose sum is σ = 24196156992. Its totient is φ = 12098078492.

The previous prime is 18147117673. The next prime is 18147117767. The reversal of 18147117741 is 14771174181.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 18147117741 - 2¹⁹ = 18146593453 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18147117693 and 18147117702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18147117641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3024519621 + ... + 3024519626.

It is an arithmetic number, because the mean of its divisors is an integer number (6049039248).

Almost surely, 2^18147117741 is an apocalyptic number.

It is an amenable number.

18147117741 is a deficient number, since it is larger than the sum of its proper divisors (6049039251).

18147117741 is an equidigital number, since it uses as much as digits as its factorization.

18147117741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6049039250.

The product of its digits is 43904, while the sum is 42.

The spelling of 18147117741 in words is "eighteen billion, one hundred forty-seven million, one hundred seventeen thousand, seven hundred forty-one".