1426843789 has 36 divisors (see below), whose sum is σ = 1734933852. Its totient is φ = 1169925120.

The previous prime is 1426843783. The next prime is 1426843807. The reversal of 1426843789 is 9873486241.

It can be written as a sum of positive squares in 2 ways, for example, as 381420900 + 1045422889 = 19530^2 + 32333^2 .

It is not a de Polignac number, because 1426843789 - 2¹⁹ = 1426319501 is a prime.

It is a super-3 number, since 3×1426843789³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1426843783) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 7392877 + ... + 7393069.

It is an arithmetic number, because the mean of its divisors is an integer number (48192607).

Almost surely, 2^1426843789 is an apocalyptic number.

It is an amenable number.

1426843789 is a deficient number, since it is larger than the sum of its proper divisors (308090063).

1426843789 is a wasteful number, since it uses less digits than its factorization.

1426843789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 426 (or 388 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 52.

The square root of 1426843789 is about 37773.5858636693. The cubic root of 1426843789 is about 1125.7936888746.

The spelling of 1426843789 in words is "one billion, four hundred twenty-six million, eight hundred forty-three thousand, seven hundred eighty-nine".