18706623414 has 12 divisors (see below), whose sum is σ = 37413916884. Its totient is φ = 6235429464.

The previous prime is 18706623389. The next prime is 18706623433. The reversal of 18706623414 is 41432660781.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 307104 + ... + 362940.

It is an arithmetic number, because the mean of its divisors is an integer number (3117826407).

Almost surely, 2^18706623414 is an apocalyptic number.

18706623414 is an abundant number, since it is smaller than the sum of its proper divisors (18707293470).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18706623414 is an frugal number, since it uses more digits than its factorization.

18706623414 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111679 (or 55842 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 42.

The spelling of 18706623414 in words is "eighteen billion, seven hundred six million, six hundred twenty-three thousand, four hundred fourteen".