18634424134 has 8 divisors (see below), whose sum is σ = 28025388360. Its totient is φ = 9292628016.

The previous prime is 18634424131. The next prime is 18634424141. The reversal of 18634424134 is 43142443681.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18634424131) 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 in 3 ways as a sum of consecutive naturals, for example, 12291079 + ... + 12292594.

It is an arithmetic number, because the mean of its divisors is an integer number (3503173545).

Almost surely, 2^18634424134 is an apocalyptic number.

18634424134 is a deficient number, since it is larger than the sum of its proper divisors (9390964226).

18634424134 is a wasteful number, since it uses less digits than its factorization.

18634424134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24584054.

The product of its digits is 221184, while the sum is 40.

The spelling of 18634424134 in words is "eighteen billion, six hundred thirty-four million, four hundred twenty-four thousand, one hundred thirty-four".