3646221022 has 4 divisors (see below), whose sum is σ = 5469331536. Its totient is φ = 1823110510.

The previous prime is 3646221017. The next prime is 3646221031. The reversal of 3646221022 is 2201226463.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2201226463 = 631 ⋅3488473.

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 as a sum of consecutive naturals, namely, 911555254 + ... + 911555257.

It is an arithmetic number, because the mean of its divisors is an integer number (1367332884).

Almost surely, 2^3646221022 is an apocalyptic number.

3646221022 is a deficient number, since it is larger than the sum of its proper divisors (1823110514).

3646221022 is a wasteful number, since it uses less digits than its factorization.

3646221022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1823110513.

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 3646221022 is about 60383.9467242743. The cubic root of 3646221022 is about 1539.1501779475.

Adding to 3646221022 its reverse (2201226463), we get a palindrome (5847447485).

The spelling of 3646221022 in words is "three billion, six hundred forty-six million, two hundred twenty-one thousand, twenty-two".