3861550887 has 16 divisors (see below), whose sum is σ = 5270398848. Its totient is φ = 2513579040.

The previous prime is 3861550873. The next prime is 3861550907. The reversal of 3861550887 is 7880551683.

It is not a de Polignac number, because 3861550887 - 2⁴ = 3861550871 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3861550837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 691368 + ... + 696930.

It is an arithmetic number, because the mean of its divisors is an integer number (329399928).

Almost surely, 2^3861550887 is an apocalyptic number.

3861550887 is a deficient number, since it is larger than the sum of its proper divisors (1408847961).

3861550887 is a wasteful number, since it uses less digits than its factorization.

3861550887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10990.

The product of its (nonzero) digits is 1612800, while the sum is 51.

The square root of 3861550887 is about 62141.3782193475. The cubic root of 3861550887 is about 1568.8710678731.

The spelling of 3861550887 in words is "three billion, eight hundred sixty-one million, five hundred fifty thousand, eight hundred eighty-seven".