18342383047 has 4 divisors (see below), whose sum is σ = 18688465800. Its totient is φ = 17996300296.

The previous prime is 18342383041. The next prime is 18342383057. The reversal of 18342383047 is 74038324381.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74038324381 = 7 ⋅10576903483.

It is a cyclic number.

It is not a de Polignac number, because 18342383047 - 2²⁷ = 18208165319 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18342382994 and 18342383012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18342383041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 173041297 + ... + 173041402.

It is an arithmetic number, because the mean of its divisors is an integer number (4672116450).

Almost surely, 2^18342383047 is an apocalyptic number.

18342383047 is a deficient number, since it is larger than the sum of its proper divisors (346082753).

18342383047 is an equidigital number, since it uses as much as digits as its factorization.

18342383047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346082752.

The product of its (nonzero) digits is 387072, while the sum is 43.

The spelling of 18342383047 in words is "eighteen billion, three hundred forty-two million, three hundred eighty-three thousand, forty-seven".