64028019186 has 64 divisors (see below), whose sum is σ = 145692518400. Its totient is φ = 20832145488.

The previous prime is 64028019157. The next prime is 64028019191. The reversal of 64028019186 is 68191082046.

64028019186 is a `hidden beast` number, since 6 + 402 + 80 + 1 + 91 + 86 = 666.

It is a Curzon number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 3722875 + ... + 3740033.

It is an arithmetic number, because the mean of its divisors is an integer number (2276445600).

Almost surely, 2^64028019186 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64028019186, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72846259200).

64028019186 is an abundant number, since it is smaller than the sum of its proper divisors (81664499214).

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

64028019186 is a wasteful number, since it uses less digits than its factorization.

64028019186 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18820 (or 18814 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 45.

The spelling of 64028019186 in words is "sixty-four billion, twenty-eight million, nineteen thousand, one hundred eighty-six".