4662781878 has 16 divisors (see below), whose sum is σ = 9647135280. Its totient is φ = 1500665376.

The previous prime is 4662781873. The next prime is 4662781909. The reversal of 4662781878 is 8781872664.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4662781873) 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 7 ways as a sum of consecutive naturals, for example, 13398625 + ... + 13398972.

It is an arithmetic number, because the mean of its divisors is an integer number (602945955).

Almost surely, 2^4662781878 is an apocalyptic number.

4662781878 is an abundant number, since it is smaller than the sum of its proper divisors (4984353402).

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

4662781878 is a wasteful number, since it uses less digits than its factorization.

4662781878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26797631.

The product of its digits is 7225344, while the sum is 57.

The square root of 4662781878 is about 68284.5654449086. The cubic root of 4662781878 is about 1670.6354780909.

The spelling of 4662781878 in words is "four billion, six hundred sixty-two million, seven hundred eighty-one thousand, eight hundred seventy-eight".