3871778541 has 8 divisors (see below), whose sum is σ = 5213484384. Its totient is φ = 2555629200.

The previous prime is 3871778539. The next prime is 3871778557. The reversal of 3871778541 is 1458771783.

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

It is not a de Polignac number, because 3871778541 - 2¹ = 3871778539 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3871778041) 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, 6388771 + ... + 6389376.

It is an arithmetic number, because the mean of its divisors is an integer number (651685548).

Almost surely, 2^3871778541 is an apocalyptic number.

It is an amenable number.

3871778541 is a deficient number, since it is larger than the sum of its proper divisors (1341705843).

3871778541 is a wasteful number, since it uses less digits than its factorization.

3871778541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12778251.

The product of its digits is 1317120, while the sum is 51.

The square root of 3871778541 is about 62223.6172285090. The cubic root of 3871778541 is about 1570.2549440613.

The spelling of 3871778541 in words is "three billion, eight hundred seventy-one million, seven hundred seventy-eight thousand, five hundred forty-one".