3928815841252 has 6 divisors (see below), whose sum is σ = 6875427722198. Its totient is φ = 1964407920624.

The previous prime is 3928815841201. The next prime is 3928815841267. The reversal of 3928815841252 is 2521485188293.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 3773251860196 + 155563981056 = 1942486^2 + 394416^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 491101980153 + ... + 491101980160.

Almost surely, 2^{3928815841252} is an apocalyptic number.

It is an amenable number.

3928815841252 is a deficient number, since it is larger than the sum of its proper divisors (2946611880946).

3928815841252 is a wasteful number, since it uses less digits than its factorization.

3928815841252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 982203960317 (or 982203960315 counting only the distinct ones).

The product of its digits is 11059200, while the sum is 58.

The spelling of 3928815841252 in words is "three trillion, nine hundred twenty-eight billion, eight hundred fifteen million, eight hundred forty-one thousand, two hundred fifty-two".