3779995645 has 8 divisors (see below), whose sum is σ = 4802818104. Its totient is φ = 2846114304.

The previous prime is 3779995643. The next prime is 3779995649. The reversal of 3779995645 is 5465999773.

It can be written as a sum of positive squares in 4 ways, for example, as 1578790756 + 2201204889 = 39734^2 + 46917^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 3779995645 - 2¹ = 3779995643 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3779995643) 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 7 ways as a sum of consecutive naturals, for example, 22235184 + ... + 22235353.

It is an arithmetic number, because the mean of its divisors is an integer number (600352263).

Almost surely, 2^3779995645 is an apocalyptic number.

It is an amenable number.

3779995645 is a deficient number, since it is larger than the sum of its proper divisors (1022822459).

3779995645 is a wasteful number, since it uses less digits than its factorization.

3779995645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44470559.

The product of its digits is 64297800, while the sum is 64.

The square root of 3779995645 is about 61481.6691787072. The cubic root of 3779995645 is about 1557.7476323193.

The spelling of 3779995645 in words is "three billion, seven hundred seventy-nine million, nine hundred ninety-five thousand, six hundred forty-five".