3864728862738 has 24 divisors (see below), whose sum is σ = 8451836956368. Its totient is φ = 1276203299832.

The previous prime is 3864728862737. The next prime is 3864728862763. The reversal of 3864728862738 is 8372688274683.

3864728862738 is a `hidden beast` number, since 3 + 8 + 6 + 472 + 8 + 86 + 2 + 73 + 8 = 666.

It is a super-2 number, since 2×3864728862738² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3864728862737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1003302556 + ... + 1003306407.

It is an arithmetic number, because the mean of its divisors is an integer number (352159873182).

Almost surely, 2^{3864728862738} is an apocalyptic number.

3864728862738 is an abundant number, since it is smaller than the sum of its proper divisors (4587108093630).

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

3864728862738 is a wasteful number, since it uses less digits than its factorization.

3864728862738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2006609078 (or 2006609075 counting only the distinct ones).

The product of its digits is 1040449536, while the sum is 72.

The spelling of 3864728862738 in words is "three trillion, eight hundred sixty-four billion, seven hundred twenty-eight million, eight hundred sixty-two thousand, seven hundred thirty-eight".