3646447253 has 2 divisors, whose sum is σ = 3646447254. Its totient is φ = 3646447252.

The previous prime is 3646447247. The next prime is 3646447279. The reversal of 3646447253 is 3527446463.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3424824484 + 221622769 = 58522^2 + 14887^2 .

It is a cyclic number.

It is not a de Polignac number, because 3646447253 - 2²⁰ = 3645398677 is a prime.

It is a super-2 number, since 2×3646447253² = 26593155137822492018, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3646446253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1823223626 + 1823223627.

It is an arithmetic number, because the mean of its divisors is an integer number (1823223627).

Almost surely, 2^3646447253 is an apocalyptic number.

It is an amenable number.

3646447253 is a deficient number, since it is larger than the sum of its proper divisors (1).

3646447253 is an equidigital number, since it uses as much as digits as its factorization.

3646447253 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1451520, while the sum is 44.

The square root of 3646447253 is about 60385.8199662802. The cubic root of 3646447253 is about 1539.1820096513.

The spelling of 3646447253 in words is "three billion, six hundred forty-six million, four hundred forty-seven thousand, two hundred fifty-three".