2218499501 has 4 divisors (see below), whose sum is σ = 2219080032. Its totient is φ = 2217918972.

The previous prime is 2218499497. The next prime is 2218499537. The reversal of 2218499501 is 1059948122.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1059948122 = 2 ⋅529974061.

It is a cyclic number.

It is not a de Polignac number, because 2218499501 - 2² = 2218499497 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2218499551) 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 3 ways as a sum of consecutive naturals, for example, 284495 + ... + 292188.

It is an arithmetic number, because the mean of its divisors is an integer number (554770008).

Almost surely, 2^2218499501 is an apocalyptic number.

It is an amenable number.

2218499501 is a deficient number, since it is larger than the sum of its proper divisors (580531).

2218499501 is an equidigital number, since it uses as much as digits as its factorization.

2218499501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 580530.

The product of its (nonzero) digits is 51840, while the sum is 41.

The square root of 2218499501 is about 47100.9501071900. The cubic root of 2218499501 is about 1304.2267750570.

The spelling of 2218499501 in words is "two billion, two hundred eighteen million, four hundred ninety-nine thousand, five hundred one".