2087697409 has 32 divisors (see below), whose sum is σ = 2582496000. Its totient is φ = 1647682560.

The previous prime is 2087697407. The next prime is 2087697431. The reversal of 2087697409 is 9047967802.

It is a cyclic number.

It is not a de Polignac number, because 2087697409 - 2¹ = 2087697407 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2087697407) 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 31 ways as a sum of consecutive naturals, for example, 1902549 + ... + 1903645.

It is an arithmetic number, because the mean of its divisors is an integer number (80703000).

Almost surely, 2^2087697409 is an apocalyptic number.

It is an amenable number.

2087697409 is a deficient number, since it is larger than the sum of its proper divisors (494798591).

2087697409 is a wasteful number, since it uses less digits than its factorization.

2087697409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1513.

The product of its (nonzero) digits is 1524096, while the sum is 52.

The square root of 2087697409 is about 45691.3275031488. The cubic root of 2087697409 is about 1278.0735606408.

The spelling of 2087697409 in words is "two billion, eighty-seven million, six hundred ninety-seven thousand, four hundred nine".