3978350826 has 32 divisors (see below), whose sum is σ = 8092208256. Its totient is φ = 1303560000.

The previous prime is 3978350821. The next prime is 3978350833. The reversal of 3978350826 is 6280538793.

It is not an unprimeable number, because it can be changed into a prime (3978350821) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 931536 + ... + 935796.

It is an arithmetic number, because the mean of its divisors is an integer number (252881508).

Almost surely, 2^3978350826 is an apocalyptic number.

3978350826 is an abundant number, since it is smaller than the sum of its proper divisors (4113857430).

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

3978350826 is a wasteful number, since it uses less digits than its factorization.

3978350826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6878.

The product of its (nonzero) digits is 2177280, while the sum is 51.

The square root of 3978350826 is about 63074.1692454209. The cubic root of 3978350826 is about 1584.5320429546.

It can be divided in two parts, 39783 and 50826, that added together give a palindrome (90609).

The spelling of 3978350826 in words is "three billion, nine hundred seventy-eight million, three hundred fifty thousand, eight hundred twenty-six".