18358082064 has 135 divisors (see below), whose sum is σ = 59802310893. Its totient is φ = 5241914496.

The previous prime is 18358082051. The next prime is 18358082069. The reversal of 18358082064 is 46028085381.

The square root of 18358082064 is 135492.

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

18358082064 is a `hidden beast` number, since 1 + 8 + 3 + 580 + 8 + 2 + 0 + 64 = 666.

It can be written as a sum of positive squares in only one way, i.e., 11470410000 + 6887672064 = 107100^2 + 82992^2 .

It is not an unprimeable number, because it can be changed into a prime (18358082069) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 11380522 + ... + 11382134.

Almost surely, 2^18358082064 is an apocalyptic number.

18358082064 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

18358082064 is the 135492-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18358082064

18358082064 is an abundant number, since it is smaller than the sum of its proper divisors (41444228829).

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

18358082064 is an equidigital number, since it uses as much as digits as its factorization.

18358082064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3254 (or 1625 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 45.

The spelling of 18358082064 in words is "eighteen billion, three hundred fifty-eight million, eighty-two thousand, sixty-four".