1656041263 has 2 divisors, whose sum is σ = 1656041264. Its totient is φ = 1656041262.

The previous prime is 1656041207. The next prime is 1656041293. The reversal of 1656041263 is 3621406561.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1656041263 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1656041293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 828020631 + 828020632.

It is an arithmetic number, because the mean of its divisors is an integer number (828020632).

Almost surely, 2^1656041263 is an apocalyptic number.

1656041263 is a deficient number, since it is larger than the sum of its proper divisors (1).

1656041263 is an equidigital number, since it uses as much as digits as its factorization.

1656041263 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 1656041263 is about 40694.4868870465. The cubic root of 1656041263 is about 1183.1061663691.

The spelling of 1656041263 in words is "one billion, six hundred fifty-six million, forty-one thousand, two hundred sixty-three".