4056646109 has 2 divisors, whose sum is σ = 4056646110. Its totient is φ = 4056646108.

The previous prime is 4056646079. The next prime is 4056646123. The reversal of 4056646109 is 9016466504.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3090804025 + 965842084 = 55595^2 + 31078^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4056646109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4056640109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2028323054 + 2028323055.

It is an arithmetic number, because the mean of its divisors is an integer number (2028323055).

Almost surely, 2^4056646109 is an apocalyptic number.

It is an amenable number.

4056646109 is a deficient number, since it is larger than the sum of its proper divisors (1).

4056646109 is an equidigital number, since it uses as much as digits as its factorization.

4056646109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 155520, while the sum is 41.

The square root of 4056646109 is about 63691.8056660353. The cubic root of 4056646109 is about 1594.8592963606.

The spelling of 4056646109 in words is "four billion, fifty-six million, six hundred forty-six thousand, one hundred nine".