3978794538252 has 48 divisors (see below), whose sum is σ = 10315813334400. Its totient is φ = 1326210834960.

The previous prime is 3978794538239. The next prime is 3978794538289. The reversal of 3978794538252 is 2528354978793.

3978794538252 is a `hidden beast` number, since 3 + 9 + 7 + 87 + 9 + 4 + 538 + 2 + 5 + 2 = 666.

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 15 ways as a sum of consecutive naturals, for example, 1959199 + ... + 3434537.

It is an arithmetic number, because the mean of its divisors is an integer number (214912777800).

Almost surely, 2^{3978794538252} is an apocalyptic number.

It is an amenable number.

3978794538252 is an abundant number, since it is smaller than the sum of its proper divisors (6337018796148).

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

3978794538252 is a wasteful number, since it uses less digits than its factorization.

3978794538252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1500323 (or 1500315 counting only the distinct ones).

The product of its digits is 914457600, while the sum is 72.

The spelling of 3978794538252 in words is "three trillion, nine hundred seventy-eight billion, seven hundred ninety-four million, five hundred thirty-eight thousand, two hundred fifty-two".