3978195411 has 4 divisors (see below), whose sum is σ = 5304260552. Its totient is φ = 2652130272.

The previous prime is 3978195407. The next prime is 3978195427. The reversal of 3978195411 is 1145918793.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 3978195411 - 2² = 3978195407 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3978195401) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 663032566 + ... + 663032571.

It is an arithmetic number, because the mean of its divisors is an integer number (1326065138).

Almost surely, 2^3978195411 is an apocalyptic number.

3978195411 is a deficient number, since it is larger than the sum of its proper divisors (1326065141).

3978195411 is a wasteful number, since it uses less digits than its factorization.

3978195411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1326065140.

The product of its digits is 272160, while the sum is 48.

The square root of 3978195411 is about 63072.9372314307. The cubic root of 3978195411 is about 1584.5114093415.

The spelling of 3978195411 in words is "three billion, nine hundred seventy-eight million, one hundred ninety-five thousand, four hundred eleven".