3643228215 has 48 divisors (see below), whose sum is σ = 7019045280. Its totient is φ = 1733072640.

The previous prime is 3643228213. The next prime is 3643228217. The reversal of 3643228215 is 5128223463.

3643228215 is a `hidden beast` number, since 3 + 6 + 432 + 2 + 8 + 215 = 666.

It is an interprime number because it is at equal distance from previous prime (3643228213) and next prime (3643228217).

It is not a de Polignac number, because 3643228215 - 2¹ = 3643228213 is a prime.

It is a super-2 number, since 2×3643228215² = 26546223653144172450, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3643228215.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3643228213) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 43200 + ... + 95669.

It is an arithmetic number, because the mean of its divisors is an integer number (146230110).

Almost surely, 2^3643228215 is an apocalyptic number.

3643228215 is a deficient number, since it is larger than the sum of its proper divisors (3375817065).

3643228215 is a wasteful number, since it uses less digits than its factorization.

3643228215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138944 (or 138941 counting only the distinct ones).

The product of its digits is 69120, while the sum is 36.

The square root of 3643228215 is about 60359.1601581732. The cubic root of 3643228215 is about 1538.7289527691.

The spelling of 3643228215 in words is "three billion, six hundred forty-three million, two hundred twenty-eight thousand, two hundred fifteen".