18425634479 has 8 divisors (see below), whose sum is σ = 21571474848. Its totient is φ = 15408195840.

The previous prime is 18425634463. The next prime is 18425634529. The reversal of 18425634479 is 97443652481.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18425634479 - 2⁴ = 18425634463 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18425634479.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18425634439) 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 7 ways as a sum of consecutive naturals, for example, 32100122 + ... + 32100695.

It is an arithmetic number, because the mean of its divisors is an integer number (2696434356).

Almost surely, 2^18425634479 is an apocalyptic number.

18425634479 is a deficient number, since it is larger than the sum of its proper divisors (3145840369).

18425634479 is an equidigital number, since it uses as much as digits as its factorization.

18425634479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64200865.

The product of its digits is 5806080, while the sum is 53.

The spelling of 18425634479 in words is "eighteen billion, four hundred twenty-five million, six hundred thirty-four thousand, four hundred seventy-nine".