3975695778 has 32 divisors (see below), whose sum is σ = 8114544000. Its totient is φ = 1298284416.

The previous prime is 3975695741. The next prime is 3975695791. The reversal of 3975695778 is 8775965793.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 34803 + ... + 95721.

It is an arithmetic number, because the mean of its divisors is an integer number (253579500).

Almost surely, 2^3975695778 is an apocalyptic number.

3975695778 is an abundant number, since it is smaller than the sum of its proper divisors (4138848222).

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

3975695778 is a wasteful number, since it uses less digits than its factorization.

3975695778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61146.

The product of its digits is 100018800, while the sum is 66.

The square root of 3975695778 is about 63053.1187016154. The cubic root of 3975695778 is about 1584.1794726689.

The spelling of 3975695778 in words is "three billion, nine hundred seventy-five million, six hundred ninety-five thousand, seven hundred seventy-eight".