3681223522 has 4 divisors (see below), whose sum is σ = 5521835286. Its totient is φ = 1840611760.

The previous prime is 3681223519. The next prime is 3681223523. The reversal of 3681223522 is 2253221863.

3681223522 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2253221863 = 461 ⋅4887683.

It can be written as a sum of positive squares in only one way, i.e., 2129730201 + 1551493321 = 46149^2 + 39389^2 .

It is not an unprimeable number, because it can be changed into a prime (3681223523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 920305879 + ... + 920305882.

Almost surely, 2^3681223522 is an apocalyptic number.

3681223522 is a deficient number, since it is larger than the sum of its proper divisors (1840611764).

3681223522 is a wasteful number, since it uses less digits than its factorization.

3681223522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1840611763.

The product of its digits is 34560, while the sum is 34.

The square root of 3681223522 is about 60673.0872957690. The cubic root of 3681223522 is about 1544.0596103168.

The spelling of 3681223522 in words is "three billion, six hundred eighty-one million, two hundred twenty-three thousand, five hundred twenty-two".