1656344713 has 2 divisors, whose sum is σ = 1656344714. Its totient is φ = 1656344712.

The previous prime is 1656344693. The next prime is 1656344717. The reversal of 1656344713 is 3174436561.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1425213504 + 231131209 = 37752^2 + 15203^2 .

It is a cyclic number.

It is not a de Polignac number, because 1656344713 - 2²⁹ = 1119473801 is a prime.

It is not a weakly prime, because it can be changed into another prime (1656344717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 828172356 + 828172357.

It is an arithmetic number, because the mean of its divisors is an integer number (828172357).

Almost surely, 2^1656344713 is an apocalyptic number.

It is an amenable number.

1656344713 is a deficient number, since it is larger than the sum of its proper divisors (1).

1656344713 is an equidigital number, since it uses as much as digits as its factorization.

1656344713 is an evil number, because the sum of its binary digits is even.

The product of its digits is 181440, while the sum is 40.

The square root of 1656344713 is about 40698.2151082821. The cubic root of 1656344713 is about 1183.1784253657.

The spelling of 1656344713 in words is "one billion, six hundred fifty-six million, three hundred forty-four thousand, seven hundred thirteen".