2087821371 has 8 divisors (see below), whose sum is σ = 2825310784. Its totient is φ = 1371106440.

The previous prime is 2087821367. The next prime is 2087821381. The reversal of 2087821371 is 1731287802.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2087821371 - 2² = 2087821367 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2087821301) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5193385 + ... + 5193786.

It is an arithmetic number, because the mean of its divisors is an integer number (353163848).

Almost surely, 2^2087821371 is an apocalyptic number.

2087821371 is a deficient number, since it is larger than the sum of its proper divisors (737489413).

2087821371 is a wasteful number, since it uses less digits than its factorization.

2087821371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10387241.

The product of its (nonzero) digits is 37632, while the sum is 39.

The square root of 2087821371 is about 45692.6839986447. The cubic root of 2087821371 is about 1278.0988563595.

The spelling of 2087821371 in words is "two billion, eighty-seven million, eight hundred twenty-one thousand, three hundred seventy-one".