3823220638 has 32 divisors (see below), whose sum is σ = 6060054528. Its totient is φ = 1806621600.

The previous prime is 3823220633. The next prime is 3823220647. The reversal of 3823220638 is 8360223283.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 3823220597 and 3823220606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3823220633) 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, 466956 + ... + 475072.

It is an arithmetic number, because the mean of its divisors is an integer number (189376704).

Almost surely, 2^3823220638 is an apocalyptic number.

3823220638 is a deficient number, since it is larger than the sum of its proper divisors (2236833890).

3823220638 is a wasteful number, since it uses less digits than its factorization.

3823220638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8328.

The product of its (nonzero) digits is 82944, while the sum is 37.

The square root of 3823220638 is about 61832.1974217317. The cubic root of 3823220638 is about 1563.6628587929.

The spelling of 3823220638 in words is "three billion, eight hundred twenty-three million, two hundred twenty thousand, six hundred thirty-eight".