1866438714 has 96 divisors (see below), whose sum is σ = 4459504896. Its totient is φ = 519012480.

The previous prime is 1866438703. The next prime is 1866438751. The reversal of 1866438714 is 4178346681.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

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 47 ways as a sum of consecutive naturals, for example, 4048444 + ... + 4048904.

It is an arithmetic number, because the mean of its divisors is an integer number (46453176).

Almost surely, 2^1866438714 is an apocalyptic number.

1866438714 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1866438714, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2229752448).

1866438714 is an abundant number, since it is smaller than the sum of its proper divisors (2593066182).

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

1866438714 is a wasteful number, since it uses less digits than its factorization.

1866438714 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 820 (or 813 counting only the distinct ones).

The product of its digits is 774144, while the sum is 48.

The square root of 1866438714 is about 43202.2998693357. The cubic root of 1866438714 is about 1231.2263781222.

The spelling of 1866438714 in words is "one billion, eight hundred sixty-six million, four hundred thirty-eight thousand, seven hundred fourteen".