64180518 has 16 divisors (see below), whose sum is σ = 135117120. Its totient is φ = 20267496.

The previous prime is 64180517. The next prime is 64180531. The reversal of 64180518 is 81508146.

64180518 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64180513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 281380 + ... + 281607.

It is an arithmetic number, because the mean of its divisors is an integer number (8444820).

Almost surely, 2^64180518 is an apocalyptic number.

64180518 is an abundant number, since it is smaller than the sum of its proper divisors (70936602).

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

64180518 is a wasteful number, since it uses less digits than its factorization.

64180518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 563011.

The product of its (nonzero) digits is 7680, while the sum is 33.

The square root of 64180518 is about 8011.2744304511. The cubic root of 64180518 is about 400.3757261309.

The spelling of 64180518 in words is "sixty-four million, one hundred eighty thousand, five hundred eighteen".