3581216862 has 16 divisors (see below), whose sum is σ = 7539404160. Its totient is φ = 1130910552.

The previous prime is 3581216839. The next prime is 3581216867. The reversal of 3581216862 is 2686121853.

3581216862 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×3581216862² = 25650228425346254088, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3581216867) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15706978 + ... + 15707205.

It is an arithmetic number, because the mean of its divisors is an integer number (471212760).

Almost surely, 2^3581216862 is an apocalyptic number.

3581216862 is an abundant number, since it is smaller than the sum of its proper divisors (3958187298).

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

3581216862 is a wasteful number, since it uses less digits than its factorization.

3581216862 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31414207.

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

The square root of 3581216862 is about 59843.2691453266. The cubic root of 3581216862 is about 1529.9487162955.

The spelling of 3581216862 in words is "three billion, five hundred eighty-one million, two hundred sixteen thousand, eight hundred sixty-two".