3145858561 has 2 divisors, whose sum is σ = 3145858562. Its totient is φ = 3145858560.

The previous prime is 3145858559. The next prime is 3145858589. The reversal of 3145858561 is 1658585413.

3145858561 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., 2618880625 + 526977936 = 51175^2 + 22956^2 .

It is a cyclic number.

It is not a de Polignac number, because 3145858561 - 2¹ = 3145858559 is a prime.

Together with 3145858559, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (3145258561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1572929280 + 1572929281.

It is an arithmetic number, because the mean of its divisors is an integer number (1572929281).

Almost surely, 2^3145858561 is an apocalyptic number.

It is an amenable number.

3145858561 is a deficient number, since it is larger than the sum of its proper divisors (1).

3145858561 is an equidigital number, since it uses as much as digits as its factorization.

3145858561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 576000, while the sum is 46.

The square root of 3145858561 is about 56087.9537958018. The cubic root of 3145858561 is about 1465.2545013245.

The spelling of 3145858561 in words is "three billion, one hundred forty-five million, eight hundred fifty-eight thousand, five hundred sixty-one".