3828391877 has 8 divisors (see below), whose sum is σ = 4035131640. Its totient is φ = 3626633920.

The previous prime is 3828391873. The next prime is 3828391943. The reversal of 3828391877 is 7781938283.

3828391877 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Cunningham number, because it is equal to 61874²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 2007577636 + 1820814241 = 44806^2 + 42671^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 3828391877 - 2² = 3828391873 is a prime.

It is a super-3 number, since 3×3828391877³ (a number of 30 digits) contains 333 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 (3828391873) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1243874 + ... + 1246947.

It is an arithmetic number, because the mean of its divisors is an integer number (504391455).

Almost surely, 2^3828391877 is an apocalyptic number.

It is an amenable number.

3828391877 is a deficient number, since it is larger than the sum of its proper divisors (206739763).

3828391877 is a wasteful number, since it uses less digits than its factorization.

3828391877 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2490903.

The product of its digits is 4064256, while the sum is 56.

The square root of 3828391877 is about 61874.0000080809. Note that the first 5 decimals coincide. The cubic root of 3828391877 is about 1564.3675379238.

The spelling of 3828391877 in words is "three billion, eight hundred twenty-eight million, three hundred ninety-one thousand, eight hundred seventy-seven".