1681826026 has 8 divisors (see below), whose sum is σ = 2531717604. Its totient is φ = 837920160.

The previous prime is 1681825993. The next prime is 1681826057. The reversal of 1681826026 is 6206281861.

It can be written as a sum of positive squares in 2 ways, for example, as 1652503801 + 29322225 = 40651^2 + 5415^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 1681826026.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1495725 + ... + 1496848.

Almost surely, 2^1681826026 is an apocalyptic number.

1681826026 is a deficient number, since it is larger than the sum of its proper divisors (849891578).

1681826026 is a wasteful number, since it uses less digits than its factorization.

1681826026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2992856.

The product of its (nonzero) digits is 55296, while the sum is 40.

The square root of 1681826026 is about 41010.0722506069. The cubic root of 1681826026 is about 1189.2149392039.

The spelling of 1681826026 in words is "one billion, six hundred eighty-one million, eight hundred twenty-six thousand, twenty-six".