18742861716 has 12 divisors (see below), whose sum is σ = 43733344032. Its totient is φ = 6247620568.

The previous prime is 18742861691. The next prime is 18742861717. The reversal of 18742861716 is 61716824781.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18742861717) 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, 780952560 + ... + 780952583.

It is an arithmetic number, because the mean of its divisors is an integer number (3644445336).

Almost surely, 2^18742861716 is an apocalyptic number.

It is an amenable number.

18742861716 is an abundant number, since it is smaller than the sum of its proper divisors (24990482316).

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

18742861716 is a wasteful number, since it uses less digits than its factorization.

18742861716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1561905150 (or 1561905148 counting only the distinct ones).

The product of its digits is 903168, while the sum is 51.

The spelling of 18742861716 in words is "eighteen billion, seven hundred forty-two million, eight hundred sixty-one thousand, seven hundred sixteen".