3261345709 has 2 divisors, whose sum is σ = 3261345710. Its totient is φ = 3261345708.

The previous prime is 3261345701. The next prime is 3261345721. The reversal of 3261345709 is 9075431623.

It is a happy number.

3261345709 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., 3186038025 + 75307684 = 56445^2 + 8678^2 .

It is a cyclic number.

It is not a de Polignac number, because 3261345709 - 2³ = 3261345701 is a prime.

It is a super-2 number, since 2×3261345709² = 21272751667225425362, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3261345701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1630672854 + 1630672855.

It is an arithmetic number, because the mean of its divisors is an integer number (1630672855).

Almost surely, 2^3261345709 is an apocalyptic number.

It is an amenable number.

3261345709 is a deficient number, since it is larger than the sum of its proper divisors (1).

3261345709 is an equidigital number, since it uses as much as digits as its factorization.

3261345709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 136080, while the sum is 40.

The square root of 3261345709 is about 57108.1930111608. The cubic root of 3261345709 is about 1482.9697050451.

The spelling of 3261345709 in words is "three billion, two hundred sixty-one million, three hundred forty-five thousand, seven hundred nine".