2218580641 has 8 divisors (see below), whose sum is σ = 2248100064. Its totient is φ = 2189234880.

The previous prime is 2218580633. The next prime is 2218580671. The reversal of 2218580641 is 1460858122.

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

It is not a de Polignac number, because 2218580641 - 2³ = 2218580633 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 2218580641.

It is not an unprimeable number, because it can be changed into a prime (2218580671) 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, 17595 + ... + 68896.

It is an arithmetic number, because the mean of its divisors is an integer number (281012508).

Almost surely, 2^2218580641 is an apocalyptic number.

It is an amenable number.

2218580641 is a deficient number, since it is larger than the sum of its proper divisors (29519423).

2218580641 is a wasteful number, since it uses less digits than its factorization.

2218580641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86831.

The product of its (nonzero) digits is 30720, while the sum is 37.

The square root of 2218580641 is about 47101.8114407503. The cubic root of 2218580641 is about 1304.2426752440.

The spelling of 2218580641 in words is "two billion, two hundred eighteen million, five hundred eighty thousand, six hundred forty-one".