3915238970646 has 12 divisors (see below), whose sum is σ = 8483017769772. Its totient is φ = 1305079656876.

The previous prime is 3915238970611. The next prime is 3915238970647. The reversal of 3915238970646 is 6460798325193.

3915238970646 is a `hidden beast` number, since 39 + 1 + 523 + 8 + 9 + 70 + 6 + 4 + 6 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3915238970647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 108756638056 + ... + 108756638091.

It is an arithmetic number, because the mean of its divisors is an integer number (706918147481).

It is a 1-persistent number, because it is pandigital, but 2⋅3915238970646 = 7830477941292 is not.

Almost surely, 2^{3915238970646} is an apocalyptic number.

3915238970646 is an abundant number, since it is smaller than the sum of its proper divisors (4567778799126).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3915238970646 is a wasteful number, since it uses less digits than its factorization.

3915238970646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217513276155 (or 217513276152 counting only the distinct ones).

The product of its (nonzero) digits is 58786560, while the sum is 63.

It can be divided in two parts, 3915238 and 970646, that added together give a palindrome (4885884).

The spelling of 3915238970646 in words is "three trillion, nine hundred fifteen billion, two hundred thirty-eight million, nine hundred seventy thousand, six hundred forty-six".