618738064 has 40 divisors (see below), whose sum is σ = 1382659520. Its totient is φ = 262735488.

The previous prime is 618738061. The next prime is 618738073. The reversal of 618738064 is 460837816.

It is a self number, because there is not a number n which added to its sum of digits gives 618738064.

It is not an unprimeable number, because it can be changed into a prime (618738061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13134 + ... + 37549.

It is an arithmetic number, because the mean of its divisors is an integer number (34566488).

Almost surely, 2^618738064 is an apocalyptic number.

It is an amenable number.

618738064 is an abundant number, since it is smaller than the sum of its proper divisors (763921456).

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

618738064 is a wasteful number, since it uses less digits than its factorization.

618738064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50807 (or 50801 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 43.

The square root of 618738064 is about 24874.4460038812. The cubic root of 618738064 is about 852.1229810647.

The spelling of 618738064 in words is "six hundred eighteen million, seven hundred thirty-eight thousand, sixty-four".