3621243253 has 8 divisors (see below), whose sum is σ = 3966473880. Its totient is φ = 3290703360.

The previous prime is 3621243251. The next prime is 3621243277. The reversal of 3621243253 is 3523421263.

It can be written as a sum of positive squares in 4 ways, for example, as 202151524 + 3419091729 = 14218^2 + 58473^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3621243253 - 2¹ = 3621243251 is a prime.

It is a super-2 number, since 2×3621243253² = 26226805394796044018, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3621243251) 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, 3672168 + ... + 3673153.

It is an arithmetic number, because the mean of its divisors is an integer number (495809235).

Almost surely, 2^3621243253 is an apocalyptic number.

It is an amenable number.

3621243253 is a deficient number, since it is larger than the sum of its proper divisors (345230627).

3621243253 is a wasteful number, since it uses less digits than its factorization.

3621243253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7345367.

The product of its digits is 25920, while the sum is 31.

The square root of 3621243253 is about 60176.7667210527. The cubic root of 3621243253 is about 1535.6275665695.

The spelling of 3621243253 in words is "three billion, six hundred twenty-one million, two hundred forty-three thousand, two hundred fifty-three".