3820630647 has 4 divisors (see below), whose sum is σ = 5094174200. Its totient is φ = 2547087096.

The previous prime is 3820630621. The next prime is 3820630669. The reversal of 3820630647 is 7460360283.

3820630647 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 3820630647 - 2¹¹ = 3820628599 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3820630687) 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, 636771772 + ... + 636771777.

It is an arithmetic number, because the mean of its divisors is an integer number (1273543550).

Almost surely, 2^3820630647 is an apocalyptic number.

3820630647 is a deficient number, since it is larger than the sum of its proper divisors (1273543553).

3820630647 is a wasteful number, since it uses less digits than its factorization.

3820630647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1273543552.

The product of its (nonzero) digits is 145152, while the sum is 39.

The square root of 3820630647 is about 61811.2501653218. The cubic root of 3820630647 is about 1563.3096846874.

The spelling of 3820630647 in words is "three billion, eight hundred twenty million, six hundred thirty thousand, six hundred forty-seven".