3887143785 has 288 divisors, whose sum is σ = 8843627520. Its totient is φ = 1567641600.

The previous prime is 3887143769. The next prime is 3887143811. The reversal of 3887143785 is 5873417883.

It is not a de Polignac number, because 3887143785 - 2⁴ = 3887143769 is a prime.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 53248509 + ... + 53248581.

It is an arithmetic number, because the mean of its divisors is an integer number (30707040).

Almost surely, 2^3887143785 is an apocalyptic number.

3887143785 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3887143785 is an abundant number, since it is smaller than the sum of its proper divisors (4956483735).

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

3887143785 is a wasteful number, since it uses less digits than its factorization.

3887143785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189 (or 179 counting only the distinct ones).

The product of its digits is 4515840, while the sum is 54.

The square root of 3887143785 is about 62346.9629172103. The cubic root of 3887143785 is about 1572.3294001657.

The spelling of 3887143785 in words is "three billion, eight hundred eighty-seven million, one hundred forty-three thousand, seven hundred eighty-five".