3643950817 has 8 divisors (see below), whose sum is σ = 3998298024. Its totient is φ = 3300181248.

The previous prime is 3643950811. The next prime is 3643950841. The reversal of 3643950817 is 7180593463.

It can be written as a sum of positive squares in 4 ways, for example, as 1354902481 + 2289048336 = 36809^2 + 47844^2 .

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

It is not a de Polignac number, because 3643950817 - 2¹¹ = 3643948769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3643950811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2643688 + ... + 2645065.

It is an arithmetic number, because the mean of its divisors is an integer number (499787253).

Almost surely, 2^3643950817 is an apocalyptic number.

It is an amenable number.

3643950817 is a deficient number, since it is larger than the sum of its proper divisors (354347207).

3643950817 is a wasteful number, since it uses less digits than its factorization.

3643950817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5288819.

The product of its (nonzero) digits is 544320, while the sum is 46.

The square root of 3643950817 is about 60365.1457133999. The cubic root of 3643950817 is about 1538.8306771236.

The spelling of 3643950817 in words is "three billion, six hundred forty-three million, nine hundred fifty thousand, eight hundred seventeen".