18179458377909 has 8 divisors (see below), whose sum is σ = 24239846111520. Its totient is φ = 12119354781456.

The previous prime is 18179458377841. The next prime is 18179458377989. The reversal of 18179458377909 is 90977385497181.

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

It is not a de Polignac number, because 18179458377909 - 2²⁰ = 18179457329333 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18179458377989) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70884954 + ... + 71140955.

It is an arithmetic number, because the mean of its divisors is an integer number (3029980763940).

Almost surely, 2^{18179458377909} is an apocalyptic number.

It is an amenable number.

18179458377909 is a deficient number, since it is larger than the sum of its proper divisors (6060387733611).

18179458377909 is a wasteful number, since it uses less digits than its factorization.

18179458377909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142068579.

The product of its (nonzero) digits is 960180480, while the sum is 78.

The spelling of 18179458377909 in words is "eighteen trillion, one hundred seventy-nine billion, four hundred fifty-eight million, three hundred seventy-seven thousand, nine hundred nine".