2091567487 has 8 divisors (see below), whose sum is σ = 2178353952. Its totient is φ = 2006373600.

The previous prime is 2091567469. The next prime is 2091567553. The reversal of 2091567487 is 7847651902.

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

It is a cyclic number.

It is not a de Polignac number, because 2091567487 - 2¹¹ = 2091565439 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2091567487.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2091567407) 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, 395464 + ... + 400717.

It is an arithmetic number, because the mean of its divisors is an integer number (272294244).

Almost surely, 2^2091567487 is an apocalyptic number.

2091567487 is a deficient number, since it is larger than the sum of its proper divisors (86786465).

2091567487 is an equidigital number, since it uses as much as digits as its factorization.

2091567487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 796289.

The product of its (nonzero) digits is 846720, while the sum is 49.

The square root of 2091567487 is about 45733.6581414608. The cubic root of 2091567487 is about 1278.8628179215.

The spelling of 2091567487 in words is "two billion, ninety-one million, five hundred sixty-seven thousand, four hundred eighty-seven".