2087395887 has 4 divisors (see below), whose sum is σ = 2783194520. Its totient is φ = 1391597256.

The previous prime is 2087395883. The next prime is 2087395897. The reversal of 2087395887 is 7885937802.

It is a happy number.

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

It is not a de Polignac number, because 2087395887 - 2² = 2087395883 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 (2087395883) 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 3 ways as a sum of consecutive naturals, for example, 347899312 + ... + 347899317.

It is an arithmetic number, because the mean of its divisors is an integer number (695798630).

Almost surely, 2^2087395887 is an apocalyptic number.

2087395887 is a deficient number, since it is larger than the sum of its proper divisors (695798633).

2087395887 is an equidigital number, since it uses as much as digits as its factorization.

2087395887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 695798632.

The product of its (nonzero) digits is 6773760, while the sum is 57.

The square root of 2087395887 is about 45688.0278300563. The cubic root of 2087395887 is about 1278.0120278011.

The spelling of 2087395887 in words is "two billion, eighty-seven million, three hundred ninety-five thousand, eight hundred eighty-seven".