2213461645 has 8 divisors (see below), whose sum is σ = 2656425240. Its totient is φ = 1770588480.

The previous prime is 2213461637. The next prime is 2213461661. The reversal of 2213461645 is 5461643122.

It can be written as a sum of positive squares in 4 ways, for example, as 180714249 + 2032747396 = 13443^2 + 45086^2 .

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

It is not a de Polignac number, because 2213461645 - 2³ = 2213461637 is a prime.

It is a super-3 number, since 3×2213461645³ (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 2213461645.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56271 + ... + 87139.

It is an arithmetic number, because the mean of its divisors is an integer number (332053155).

Almost surely, 2^2213461645 is an apocalyptic number.

It is an amenable number.

2213461645 is a deficient number, since it is larger than the sum of its proper divisors (442963595).

2213461645 is a wasteful number, since it uses less digits than its factorization.

2213461645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45215.

The product of its digits is 34560, while the sum is 34.

The square root of 2213461645 is about 47047.4403660816. The cubic root of 2213461645 is about 1303.2387969985.

The spelling of 2213461645 in words is "two billion, two hundred thirteen million, four hundred sixty-one thousand, six hundred forty-five".