3453720643 has 2 divisors, whose sum is σ = 3453720644. Its totient is φ = 3453720642.

The previous prime is 3453720607. The next prime is 3453720679. The reversal of 3453720643 is 3460273543.

It is a balanced prime because it is at equal distance from previous prime (3453720607) and next prime (3453720679).

It is a cyclic number.

It is not a de Polignac number, because 3453720643 - 2⁹ = 3453720131 is a prime.

It is not a weakly prime, because it can be changed into another prime (3453720443) 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, 1726860321 + 1726860322.

It is an arithmetic number, because the mean of its divisors is an integer number (1726860322).

Almost surely, 2^3453720643 is an apocalyptic number.

3453720643 is a deficient number, since it is larger than the sum of its proper divisors (1).

3453720643 is an equidigital number, since it uses as much as digits as its factorization.

3453720643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 181440, while the sum is 37.

The square root of 3453720643 is about 58768.3643042751. The cubic root of 3453720643 is about 1511.5728013727.

The spelling of 3453720643 in words is "three billion, four hundred fifty-three million, seven hundred twenty thousand, six hundred forty-three".