18654014506 has 4 divisors (see below), whose sum is σ = 27981021762. Its totient is φ = 9327007252.

The previous prime is 18654014501. The next prime is 18654014527. The reversal of 18654014506 is 60541045681.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 60541045681 = 15107 ⋅4007483.

It can be written as a sum of positive squares in only one way, i.e., 13551055281 + 5102959225 = 116409^2 + 71435^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (18654014501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4663503625 + ... + 4663503628.

Almost surely, 2^18654014506 is an apocalyptic number.

18654014506 is a deficient number, since it is larger than the sum of its proper divisors (9327007256).

18654014506 is an equidigital number, since it uses as much as digits as its factorization.

18654014506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9327007255.

The product of its (nonzero) digits is 115200, while the sum is 40.

The spelling of 18654014506 in words is "eighteen billion, six hundred fifty-four million, fourteen thousand, five hundred six".