1081423166 has 8 divisors (see below), whose sum is σ = 1678070520. Its totient is φ = 522066328.

The previous prime is 1081423163. The next prime is 1081423229. The reversal of 1081423166 is 6613241801.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1081423166² = 2338952127922927112, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1081423163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9322556 + ... + 9322671.

It is an arithmetic number, because the mean of its divisors is an integer number (209758815).

Almost surely, 2^1081423166 is an apocalyptic number.

1081423166 is a deficient number, since it is larger than the sum of its proper divisors (596647354).

1081423166 is a wasteful number, since it uses less digits than its factorization.

1081423166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18645258.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 1081423166 is about 32884.9991029345. Note that the first 3 decimals coincide. The cubic root of 1081423166 is about 1026.4360330918.

Adding to 1081423166 its reverse (6613241801), we get a palindrome (7694664967).

The spelling of 1081423166 in words is "one billion, eighty-one million, four hundred twenty-three thousand, one hundred sixty-six".