2681946 has 12 divisors (see below), whose sum is σ = 5810922. Its totient is φ = 893976.

The previous prime is 2681929. The next prime is 2681951. The reversal of 2681946 is 6491862.

2681946 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 1347921 + 1334025 = 1161^2 + 1155^2 .

It is an Ulam number.

It is a d-powerful number, because it can be written as 2¹⁹ + 6³ + 8⁷ + 1 + 9⁵ + 4⁵ + 6³ .

It is a self number, because there is not a number n which added to its sum of digits gives 2681946.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 74481 + ... + 74516.

2^2681946 is an apocalyptic number.

2681946 is an abundant number, since it is smaller than the sum of its proper divisors (3128976).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2681946 is a wasteful number, since it uses less digits than its factorization.

2681946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149005 (or 149002 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 2681946 is about 1637.6648008674. The cubic root of 2681946 is about 138.9366030789.

The spelling of 2681946 in words is "two million, six hundred eighty-one thousand, nine hundred forty-six".