2149860587 has 4 divisors (see below), whose sum is σ = 2456983536. Its totient is φ = 1842737640.

The previous prime is 2149860553. The next prime is 2149860611. The reversal of 2149860587 is 7850689412.

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

It is a cyclic number.

It is not a de Polignac number, because 2149860587 - 2¹⁶ = 2149795051 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2149860527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 153561464 + ... + 153561477.

It is an arithmetic number, because the mean of its divisors is an integer number (614245884).

Almost surely, 2^2149860587 is an apocalyptic number.

2149860587 is a deficient number, since it is larger than the sum of its proper divisors (307122949).

2149860587 is an equidigital number, since it uses as much as digits as its factorization.

2149860587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307122948.

The product of its (nonzero) digits is 967680, while the sum is 50.

The square root of 2149860587 is about 46366.5891240665. The cubic root of 2149860587 is about 1290.6349831433.

The spelling of 2149860587 in words is "two billion, one hundred forty-nine million, eight hundred sixty thousand, five hundred eighty-seven".