18649543014 has 48 divisors (see below), whose sum is σ = 42907082400. Its totient is φ = 5834039040.

The previous prime is 18649543013. The next prime is 18649543049. The reversal of 18649543014 is 41034594681.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18649543013) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19479 + ... + 194109.

It is an arithmetic number, because the mean of its divisors is an integer number (893897550).

Almost surely, 2^18649543014 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18649543014, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21453541200).

18649543014 is an abundant number, since it is smaller than the sum of its proper divisors (24257539386).

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

18649543014 is a wasteful number, since it uses less digits than its factorization.

18649543014 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175005 (or 175002 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 45.

The spelling of 18649543014 in words is "eighteen billion, six hundred forty-nine million, five hundred forty-three thousand, fourteen".