1143381826 has 16 divisors (see below), whose sum is σ = 1752440184. Its totient is φ = 559297024.

The previous prime is 1143381823. The next prime is 1143381839. The reversal of 1143381826 is 6281833411.

It can be written as a sum of positive squares in 4 ways, for example, as 795522025 + 347859801 = 28205^2 + 18651^2 .

It is not an unprimeable number, because it can be changed into a prime (1143381823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22140 + ... + 52696.

Almost surely, 2^1143381826 is an apocalyptic number.

1143381826 is a deficient number, since it is larger than the sum of its proper divisors (609058358).

1143381826 is a wasteful number, since it uses less digits than its factorization.

1143381826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30965.

The product of its digits is 27648, while the sum is 37.

The square root of 1143381826 is about 33813.9294670111. The cubic root of 1143381826 is about 1045.6758906725.

The spelling of 1143381826 in words is "one billion, one hundred forty-three million, three hundred eighty-one thousand, eight hundred twenty-six".