3877881867 has 6 divisors (see below), whose sum is σ = 5601384932. Its totient is φ = 2585254572.

The previous prime is 3877881863. The next prime is 3877881871. The reversal of 3877881867 is 7681887783.

3877881867 is a `hidden beast` number, since 387 + 78 + 8 + 186 + 7 = 666.

It is an interprime number because it is at equal distance from previous prime (3877881863) and next prime (3877881871).

It is not a de Polignac number, because 3877881867 - 2² = 3877881863 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3877881863) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 215437873 + ... + 215437890.

Almost surely, 2^3877881867 is an apocalyptic number.

3877881867 is a deficient number, since it is larger than the sum of its proper divisors (1723503065).

3877881867 is a wasteful number, since it uses less digits than its factorization.

3877881867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 430875769 (or 430875766 counting only the distinct ones).

The product of its digits is 25288704, while the sum is 63.

The square root of 3877881867 is about 62272.6414005380. The cubic root of 3877881867 is about 1571.0796078254.

The spelling of 3877881867 in words is "three billion, eight hundred seventy-seven million, eight hundred eighty-one thousand, eight hundred sixty-seven".