3626473621 has 2 divisors, whose sum is σ = 3626473622. Its totient is φ = 3626473620.

The previous prime is 3626473619. The next prime is 3626473649. The reversal of 3626473621 is 1263746263.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3613692996 + 12780625 = 60114^2 + 3575^2 .

It is a cyclic number.

It is not a de Polignac number, because 3626473621 - 2¹ = 3626473619 is a prime.

Together with 3626473619, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3626473421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1813236810 + 1813236811.

It is an arithmetic number, because the mean of its divisors is an integer number (1813236811).

Almost surely, 2^3626473621 is an apocalyptic number.

It is an amenable number.

3626473621 is a deficient number, since it is larger than the sum of its proper divisors (1).

3626473621 is an equidigital number, since it uses as much as digits as its factorization.

3626473621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 217728, while the sum is 40.

The square root of 3626473621 is about 60220.2094068096. The cubic root of 3626473621 is about 1536.3665423712.

The spelling of 3626473621 in words is "three billion, six hundred twenty-six million, four hundred seventy-three thousand, six hundred twenty-one".