3877821057 has 64 divisors (see below), whose sum is σ = 6201888768. Its totient is φ = 2128512000.

The previous prime is 3877821049. The next prime is 3877821061. The reversal of 3877821057 is 7501287783.

It is not a de Polignac number, because 3877821057 - 2³ = 3877821049 is a prime.

It is a super-2 number, since 2×3877821057² = 30074992300225194498, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3877820997 and 3877821015.

It is not an unprimeable number, because it can be changed into a prime (3877821557) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1607182 + ... + 1609592.

It is an arithmetic number, because the mean of its divisors is an integer number (96904512).

Almost surely, 2^3877821057 is an apocalyptic number.

It is an amenable number.

3877821057 is a deficient number, since it is larger than the sum of its proper divisors (2324067711).

3877821057 is a wasteful number, since it uses less digits than its factorization.

3877821057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2550.

The product of its (nonzero) digits is 658560, while the sum is 48.

The square root of 3877821057 is about 62272.1531424761. The cubic root of 3877821057 is about 1571.0713956232.

The spelling of 3877821057 in words is "three billion, eight hundred seventy-seven million, eight hundred twenty-one thousand, fifty-seven".