18245743 has 4 divisors (see below), whose sum is σ = 19319040. Its totient is φ = 17172448.

The previous prime is 18245741. The next prime is 18245749. The reversal of 18245743 is 34754281.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34754281 = 859 ⋅40459.

It is not a de Polignac number, because 18245743 - 2¹ = 18245741 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18245699 and 18245708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18245741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 536623 + ... + 536656.

It is an arithmetic number, because the mean of its divisors is an integer number (4829760).

Almost surely, 2^18245743 is an apocalyptic number.

18245743 is a deficient number, since it is larger than the sum of its proper divisors (1073297).

18245743 is a wasteful number, since it uses less digits than its factorization.

18245743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1073296.

The product of its digits is 26880, while the sum is 34.

The square root of 18245743 is about 4271.5035994366. The cubic root of 18245743 is about 263.2613987495.

The spelling of 18245743 in words is "eighteen million, two hundred forty-five thousand, seven hundred forty-three".