3637416521 has 2 divisors, whose sum is σ = 3637416522. Its totient is φ = 3637416520.

The previous prime is 3637416511. The next prime is 3637416539. The reversal of 3637416521 is 1256147363.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2340624400 + 1296792121 = 48380^2 + 36011^2 .

It is an emirp because it is prime and its reverse (1256147363) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3637416521 - 2¹⁰ = 3637415497 is a prime.

It is not a weakly prime, because it can be changed into another prime (3637416511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1818708260 + 1818708261.

It is an arithmetic number, because the mean of its divisors is an integer number (1818708261).

Almost surely, 2^3637416521 is an apocalyptic number.

It is an amenable number.

3637416521 is a deficient number, since it is larger than the sum of its proper divisors (1).

3637416521 is an equidigital number, since it uses as much as digits as its factorization.

3637416521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 90720, while the sum is 38.

The square root of 3637416521 is about 60310.9983419277. The cubic root of 3637416521 is about 1537.9103215427.

The spelling of 3637416521 in words is "three billion, six hundred thirty-seven million, four hundred sixteen thousand, five hundred twenty-one".