3445643209 has 2 divisors, whose sum is σ = 3445643210. Its totient is φ = 3445643208.

The previous prime is 3445643203. The next prime is 3445643231. The reversal of 3445643209 is 9023465443.

3445643209 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., 2945449984 + 500193225 = 54272^2 + 22365^2 .

It is a cyclic number.

It is not a de Polignac number, because 3445643209 - 2⁵ = 3445643177 is a prime.

It is a super-3 number, since 3×3445643209³ (a number of 30 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (3445643203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1722821604 + 1722821605.

It is an arithmetic number, because the mean of its divisors is an integer number (1722821605).

Almost surely, 2^3445643209 is an apocalyptic number.

It is an amenable number.

3445643209 is a deficient number, since it is larger than the sum of its proper divisors (1).

3445643209 is an equidigital number, since it uses as much as digits as its factorization.

3445643209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 311040, while the sum is 40.

The square root of 3445643209 is about 58699.6014381699. The cubic root of 3445643209 is about 1510.3934780027.

The spelling of 3445643209 in words is "three billion, four hundred forty-five million, six hundred forty-three thousand, two hundred nine".