3913938331650 has 96 divisors (see below), whose sum is σ = 10988566686720. Its totient is φ = 1024024098240.

The previous prime is 3913938331631. The next prime is 3913938331697. The reversal of 3913938331650 is 561338393193.

3913938331650 is a `hidden beast` number, since 3 + 91 + 393 + 8 + 3 + 3 + 165 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

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 in 47 ways as a sum of consecutive naturals, for example, 27279522 + ... + 27422621.

It is an arithmetic number, because the mean of its divisors is an integer number (114464236320).

Almost surely, 2^{3913938331650} is an apocalyptic number.

3913938331650 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

3913938331650 is an abundant number, since it is smaller than the sum of its proper divisors (7074628355070).

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

3913938331650 is a wasteful number, since it uses less digits than its factorization.

3913938331650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54702217 (or 54702206 counting only the distinct ones).

The product of its (nonzero) digits is 4723920, while the sum is 54.

The spelling of 3913938331650 in words is "three trillion, nine hundred thirteen billion, nine hundred thirty-eight million, three hundred thirty-one thousand, six hundred fifty".