18629034859 has 4 divisors (see below), whose sum is σ = 18645624616. Its totient is φ = 18612445104.

The previous prime is 18629034839. The next prime is 18629034881. The reversal of 18629034859 is 95843092681.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 18629034859 - 2⁷ = 18629034731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18629034829) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8293194 + ... + 8295439.

It is an arithmetic number, because the mean of its divisors is an integer number (4661406154).

Almost surely, 2^18629034859 is an apocalyptic number.

18629034859 is a deficient number, since it is larger than the sum of its proper divisors (16589757).

18629034859 is a wasteful number, since it uses less digits than its factorization.

18629034859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16589756.

The product of its (nonzero) digits is 3732480, while the sum is 55.

The spelling of 18629034859 in words is "eighteen billion, six hundred twenty-nine million, thirty-four thousand, eight hundred fifty-nine".