3981754871 has 8 divisors (see below), whose sum is σ = 4162164864. Its totient is φ = 3801952440.

The previous prime is 3981754853. The next prime is 3981754921. The reversal of 3981754871 is 1784571893.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3981754871 - 2¹⁰ = 3981753847 is a prime.

It is a super-4 number, since 4×3981754871⁴ (a number of 40 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3981754471) 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, 138461 + ... + 164726.

It is an arithmetic number, because the mean of its divisors is an integer number (520270608).

Almost surely, 2^3981754871 is an apocalyptic number.

3981754871 is a deficient number, since it is larger than the sum of its proper divisors (180409993).

3981754871 is a wasteful number, since it uses less digits than its factorization.

3981754871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303781.

The product of its digits is 1693440, while the sum is 53.

The square root of 3981754871 is about 63101.1479372602. The cubic root of 3981754871 is about 1584.9838449660.

The spelling of 3981754871 in words is "three billion, nine hundred eighty-one million, seven hundred fifty-four thousand, eight hundred seventy-one".