3629862721 has 2 divisors, whose sum is σ = 3629862722. Its totient is φ = 3629862720.

The previous prime is 3629862701. The next prime is 3629862773. The reversal of 3629862721 is 1272689263.

3629862721 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3259839025 + 370023696 = 57095^2 + 19236^2 .

It is an emirp because it is prime and its reverse (1272689263) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3629862721 - 2¹¹ = 3629860673 is a prime.

It is not a weakly prime, because it can be changed into another prime (3629862701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1814931360 + 1814931361.

It is an arithmetic number, because the mean of its divisors is an integer number (1814931361).

Almost surely, 2^3629862721 is an apocalyptic number.

It is an amenable number.

3629862721 is a deficient number, since it is larger than the sum of its proper divisors (1).

3629862721 is an equidigital number, since it uses as much as digits as its factorization.

3629862721 is an evil number, because the sum of its binary digits is even.

The product of its digits is 435456, while the sum is 46.

The square root of 3629862721 is about 60248.3420601762. The cubic root of 3629862721 is about 1536.8449941868.

The spelling of 3629862721 in words is "three billion, six hundred twenty-nine million, eight hundred sixty-two thousand, seven hundred twenty-one".