3789664647 has 8 divisors (see below), whose sum is σ = 5054914944. Its totient is φ = 2525428728.

The previous prime is 3789664609. The next prime is 3789664649. The reversal of 3789664647 is 7464669873.

It is a happy number.

3789664647 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 3789664647 - 2¹¹ = 3789662599 is a prime.

It is a super-3 number, since 3×3789664647³ (a number of 30 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3789664649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 244833 + ... + 259850.

It is an arithmetic number, because the mean of its divisors is an integer number (631864368).

Almost surely, 2^3789664647 is an apocalyptic number.

3789664647 is a deficient number, since it is larger than the sum of its proper divisors (1265250297).

3789664647 is a wasteful number, since it uses less digits than its factorization.

3789664647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 507189.

The product of its digits is 36578304, while the sum is 60.

The square root of 3789664647 is about 61560.2521680995. The cubic root of 3789664647 is about 1559.0747097515.

The spelling of 3789664647 in words is "three billion, seven hundred eighty-nine million, six hundred sixty-four thousand, six hundred forty-seven".