2087556009 has 48 divisors (see below), whose sum is σ = 3510076416. Its totient is φ = 1080240480.

The previous prime is 2087556001. The next prime is 2087556019. The reversal of 2087556009 is 9006557802.

It is not a de Polignac number, because 2087556009 - 2³ = 2087556001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2087556001) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 717652 + ... + 720554.

It is an arithmetic number, because the mean of its divisors is an integer number (73126592).

Almost surely, 2^2087556009 is an apocalyptic number.

It is an amenable number.

2087556009 is a deficient number, since it is larger than the sum of its proper divisors (1422520407).

2087556009 is a wasteful number, since it uses less digits than its factorization.

2087556009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3218 (or 3207 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 42.

The square root of 2087556009 is about 45689.7801373568. The cubic root of 2087556009 is about 1278.0447052967.

It can be divided in two parts, 2087 and 556009, that added together give a triangular number (558096 = T₁₀₅₆).

The spelling of 2087556009 in words is "two billion, eighty-seven million, five hundred fifty-six thousand, nine".