1643562460226 has 8 divisors (see below), whose sum is σ = 2550355541820. Its totient is φ = 793443946288.

The previous prime is 1643562460213. The next prime is 1643562460237. The reversal of 1643562460226 is 6220642653461.

It is a Cunningham number, because it is equal to 1282015²+1.

It can be written as a sum of positive squares in 2 ways, for example, as 1643562460225 + 1 = 1282015^2 + 1^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14168641841 + ... + 14168641956.

Almost surely, 2^{1643562460226} is an apocalyptic number.

1643562460226 is a deficient number, since it is larger than the sum of its proper divisors (906793081594).

1643562460226 is a wasteful number, since it uses less digits than its factorization.

1643562460226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28337283828.

The product of its (nonzero) digits is 2488320, while the sum is 47.

The spelling of 1643562460226 in words is "one trillion, six hundred forty-three billion, five hundred sixty-two million, four hundred sixty thousand, two hundred twenty-six".