2215459509 has 16 divisors (see below), whose sum is σ = 2966483520. Its totient is φ = 1470719360.

The previous prime is 2215459483. The next prime is 2215459523. The reversal of 2215459509 is 9059545122.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 2215459509 - 2¹⁹ = 2214935221 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2215459579) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 810457 + ... + 813185.

It is an arithmetic number, because the mean of its divisors is an integer number (185405220).

Almost surely, 2^2215459509 is an apocalyptic number.

It is an amenable number.

2215459509 is a deficient number, since it is larger than the sum of its proper divisors (751024011).

2215459509 is a wasteful number, since it uses less digits than its factorization.

2215459509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3780.

The product of its (nonzero) digits is 162000, while the sum is 42.

The square root of 2215459509 is about 47068.6680181201. The cubic root of 2215459509 is about 1303.6307789290.

The spelling of 2215459509 in words is "two billion, two hundred fifteen million, four hundred fifty-nine thousand, five hundred nine".