3659894217226 has 16 divisors (see below), whose sum is σ = 5912182710504. Its totient is φ = 1689168832704.

The previous prime is 3659894217181. The next prime is 3659894217229. The reversal of 3659894217226 is 6227124989563.

It is a Cunningham number, because it is equal to 1913085²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 3347988722001 + 311905495225 = 1829751^2 + 558485^2 .

It is not an unprimeable number, because it can be changed into a prime (3659894217229) 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, 3406680 + ... + 4350316.

Almost surely, 2^{3659894217226} is an apocalyptic number.

3659894217226 is a deficient number, since it is larger than the sum of its proper divisors (2252288493278).

3659894217226 is a wasteful number, since it uses less digits than its factorization.

3659894217226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1092825.

The product of its digits is 78382080, while the sum is 64.

The spelling of 3659894217226 in words is "three trillion, six hundred fifty-nine billion, eight hundred ninety-four million, two hundred seventeen thousand, two hundred twenty-six".