18000454739 has 4 divisors (see below), whose sum is σ = 18000897720. Its totient is φ = 18000011760.

The previous prime is 18000454723. The next prime is 18000454751. The reversal of 18000454739 is 93745400081.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93745400081 = 245029 ⋅382589.

It is a cyclic number.

It is not a de Polignac number, because 18000454739 - 2⁴ = 18000454723 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18000454696 and 18000454705.

It is not an unprimeable number, because it can be changed into a prime (18000451739) 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, 153602 + ... + 244119.

It is an arithmetic number, because the mean of its divisors is an integer number (4500224430).

Almost surely, 2^18000454739 is an apocalyptic number.

18000454739 is a deficient number, since it is larger than the sum of its proper divisors (442981).

18000454739 is an equidigital number, since it uses as much as digits as its factorization.

18000454739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 442980.

The product of its (nonzero) digits is 120960, while the sum is 41.

The spelling of 18000454739 in words is "eighteen billion, four hundred fifty-four thousand, seven hundred thirty-nine".