1442561813 has 12 divisors (see below), whose sum is σ = 1830635712. Its totient is φ = 1124073720.

The previous prime is 1442561789. The next prime is 1442561831. The reversal of 1442561813 is 3181652441.

It is not a de Polignac number, because 1442561813 - 2⁶ = 1442561749 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1442561873) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1337645 + ... + 1338722.

It is an arithmetic number, because the mean of its divisors is an integer number (152552976).

Almost surely, 2^1442561813 is an apocalyptic number.

It is an amenable number.

1442561813 is a deficient number, since it is larger than the sum of its proper divisors (388073899).

1442561813 is a wasteful number, since it uses less digits than its factorization.

1442561813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2676392 (or 2676385 counting only the distinct ones).

The product of its digits is 23040, while the sum is 35.

The square root of 1442561813 is about 37981.0717726607. The cubic root of 1442561813 is about 1129.9124930279.

The spelling of 1442561813 in words is "one billion, four hundred forty-two million, five hundred sixty-one thousand, eight hundred thirteen".