18032245523 has 4 divisors (see below), whose sum is σ = 18079327488. Its totient is φ = 17985163560.

The previous prime is 18032245489. The next prime is 18032245537. The reversal of 18032245523 is 32554223081.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32554223081 = 41 ⋅794005441.

It is a cyclic number.

It is not a de Polignac number, because 18032245523 - 2¹⁶ = 18032179987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18032235523) 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, 23540408 + ... + 23541173.

It is an arithmetic number, because the mean of its divisors is an integer number (4519831872).

Almost surely, 2^18032245523 is an apocalyptic number.

18032245523 is a deficient number, since it is larger than the sum of its proper divisors (47081965).

18032245523 is an equidigital number, since it uses as much as digits as its factorization.

18032245523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47081964.

The product of its (nonzero) digits is 57600, while the sum is 35.

The spelling of 18032245523 in words is "eighteen billion, thirty-two million, two hundred forty-five thousand, five hundred twenty-three".