1138566822 has 32 divisors (see below), whose sum is σ = 2400620544. Its totient is φ = 359462400.

The previous prime is 1138566817. The next prime is 1138566827. The reversal of 1138566822 is 2286658311.

It is an interprime number because it is at equal distance from previous prime (1138566817) and next prime (1138566827).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1138566827) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56379 + ... + 73862.

It is an arithmetic number, because the mean of its divisors is an integer number (75019392).

Almost surely, 2^1138566822 is an apocalyptic number.

1138566822 is an abundant number, since it is smaller than the sum of its proper divisors (1262053722).

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

1138566822 is a wasteful number, since it uses less digits than its factorization.

1138566822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130324.

The product of its digits is 138240, while the sum is 42.

The square root of 1138566822 is about 33742.6558231565. The cubic root of 1138566822 is about 1044.2059769599.

The spelling of 1138566822 in words is "one billion, one hundred thirty-eight million, five hundred sixty-six thousand, eight hundred twenty-two".