3629818590865 has 4 divisors (see below), whose sum is σ = 4355782309044. Its totient is φ = 2903854872688.

The previous prime is 3629818590821. The next prime is 3629818590913. The reversal of 3629818590865 is 5680958189263.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2723516494864 + 906302096001 = 1650308^2 + 951999^2 .

It is a cyclic number.

It is not a de Polignac number, because 3629818590865 - 2¹⁵ = 3629818558097 is a prime.

It is a super-2 number, since 2×3629818590865² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3629818590794 and 3629818590803.

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 3 ways as a sum of consecutive naturals, for example, 362981859082 + ... + 362981859091.

It is an arithmetic number, because the mean of its divisors is an integer number (1088945577261).

Almost surely, 2^{3629818590865} is an apocalyptic number.

It is an amenable number.

3629818590865 is a deficient number, since it is larger than the sum of its proper divisors (725963718179).

3629818590865 is an equidigital number, since it uses as much as digits as its factorization.

3629818590865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 725963718178.

The product of its (nonzero) digits is 223948800, while the sum is 70.

The spelling of 3629818590865 in words is "three trillion, six hundred twenty-nine billion, eight hundred eighteen million, five hundred ninety thousand, eight hundred sixty-five".