3621818444 has 6 divisors (see below), whose sum is σ = 6338182284. Its totient is φ = 1810909220.

The previous prime is 3621818401. The next prime is 3621818467. The reversal of 3621818444 is 4448181263.

It is a super-2 number, since 2×3621818444² = 26235137682597162272, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 452727302 + ... + 452727309.

It is an arithmetic number, because the mean of its divisors is an integer number (1056363714).

Almost surely, 2^3621818444 is an apocalyptic number.

It is an amenable number.

3621818444 is a deficient number, since it is larger than the sum of its proper divisors (2716363840).

3621818444 is a wasteful number, since it uses less digits than its factorization.

3621818444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 905454615 (or 905454613 counting only the distinct ones).

The product of its digits is 147456, while the sum is 41.

The square root of 3621818444 is about 60181.5457096276. The cubic root of 3621818444 is about 1535.7088675972.

The spelling of 3621818444 in words is "three billion, six hundred twenty-one million, eight hundred eighteen thousand, four hundred forty-four".