18927706084 has 81 divisors (see below), whose sum is σ = 39940439049. Its totient is φ = 7825436640.

The previous prime is 18927706081. The next prime is 18927706123. The reversal of 18927706084 is 48060772981.

The square root of 18927706084 is 137578.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 1059502500 + 17868203584 = 32550^2 + 133672^2 .

It is not an unprimeable number, because it can be changed into a prime (18927706081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 59708694 + ... + 59709010.

Almost surely, 2^18927706084 is an apocalyptic number.

18927706084 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

18927706084 is the 137578-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18927706084

18927706084 is an abundant number, since it is smaller than the sum of its proper divisors (21012732965).

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

18927706084 is an equidigital number, since it uses as much as digits as its factorization.

18927706084 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 714 (or 357 counting only the distinct ones).

The product of its (nonzero) digits is 1354752, while the sum is 52.

The spelling of 18927706084 in words is "eighteen billion, nine hundred twenty-seven million, seven hundred six thousand, eighty-four".