3913695785 has 8 divisors (see below), whose sum is σ = 4704050376. Its totient is φ = 3125879680.

The previous prime is 3913695743. The next prime is 3913695803. The reversal of 3913695785 is 5875963193.

It can be written as a sum of positive squares in 4 ways, for example, as 360582121 + 3553113664 = 18989^2 + 59608^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3913695785 - 2²⁰ = 3912647209 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3913695785.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 631226 + ... + 637395.

It is an arithmetic number, because the mean of its divisors is an integer number (588006297).

Almost surely, 2^3913695785 is an apocalyptic number.

It is an amenable number.

3913695785 is a deficient number, since it is larger than the sum of its proper divisors (790354591).

3913695785 is a wasteful number, since it uses less digits than its factorization.

3913695785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1269243.

The product of its digits is 6123600, while the sum is 56.

The square root of 3913695785 is about 62559.5379218869. The cubic root of 3913695785 is about 1575.9013280543.

The spelling of 3913695785 in words is "three billion, nine hundred thirteen million, six hundred ninety-five thousand, seven hundred eighty-five".