3201622643 has 4 divisors (see below), whose sum is σ = 3234629160. Its totient is φ = 3168616128.

The previous prime is 3201622639. The next prime is 3201622679. The reversal of 3201622643 is 3462261023.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3201622643 - 2² = 3201622639 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3201622603) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 16503113 + ... + 16503306.

It is an arithmetic number, because the mean of its divisors is an integer number (808657290).

Almost surely, 2^3201622643 is an apocalyptic number.

3201622643 is a deficient number, since it is larger than the sum of its proper divisors (33006517).

3201622643 is an equidigital number, since it uses as much as digits as its factorization.

3201622643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33006516.

The product of its (nonzero) digits is 10368, while the sum is 29.

The square root of 3201622643 is about 56582.8829505885. The cubic root of 3201622643 is about 1473.8616351977.

Adding to 3201622643 its reverse (3462261023), we get a palindrome (6663883666).

The spelling of 3201622643 in words is "three billion, two hundred one million, six hundred twenty-two thousand, six hundred forty-three".