4187868887 has 4 divisors (see below), whose sum is σ = 4189237416. Its totient is φ = 4186500360.

The previous prime is 4187868787. The next prime is 4187868889. The reversal of 4187868887 is 7888687814.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 4187868887 - 2¹⁸ = 4187606743 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4187868889) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 679664 + ... + 685797.

It is an arithmetic number, because the mean of its divisors is an integer number (1047309354).

Almost surely, 2^4187868887 is an apocalyptic number.

4187868887 is a deficient number, since it is larger than the sum of its proper divisors (1368529).

4187868887 is a wasteful number, since it uses less digits than its factorization.

4187868887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1368528.

The product of its digits is 38535168, while the sum is 65.

The square root of 4187868887 is about 64713.7457345810. The cubic root of 4187868887 is about 1611.8737603229.

The spelling of 4187868887 in words is "four billion, one hundred eighty-seven million, eight hundred sixty-eight thousand, eight hundred eighty-seven".