4000181822 has 16 divisors (see below), whose sum is σ = 7384951392. Its totient is φ = 1582489440.

The previous prime is 4000181767. The next prime is 4000181881. The reversal of 4000181822 is 2281810004.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a junction number, because it is equal to n+sod(n) for n = 4000181791 and 4000181800.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10989329 + ... + 10989692.

It is an arithmetic number, because the mean of its divisors is an integer number (461559462).

Almost surely, 2^4000181822 is an apocalyptic number.

4000181822 is a deficient number, since it is larger than the sum of its proper divisors (3384769570).

4000181822 is a wasteful number, since it uses less digits than its factorization.

4000181822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21979043.

The product of its (nonzero) digits is 1024, while the sum is 26.

The square root of 4000181822 is about 63246.9906161550. The cubic root of 4000181822 is about 1587.4251036399.

Adding to 4000181822 its reverse (2281810004), we get a palindrome (6281991826).

The spelling of 4000181822 in words is "four billion, one hundred eighty-one thousand, eight hundred twenty-two".