1656728027 has 2 divisors, whose sum is σ = 1656728028. Its totient is φ = 1656728026.

The previous prime is 1656728011. The next prime is 1656728033. The reversal of 1656728027 is 7208276561.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1656728027 - 2⁴ = 1656728011 is a prime.

It is not a weakly prime, because it can be changed into another prime (1656728077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 828364013 + 828364014.

It is an arithmetic number, because the mean of its divisors is an integer number (828364014).

Almost surely, 2^1656728027 is an apocalyptic number.

1656728027 is a deficient number, since it is larger than the sum of its proper divisors (1).

1656728027 is an equidigital number, since it uses as much as digits as its factorization.

1656728027 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 282240, while the sum is 44.

The square root of 1656728027 is about 40702.9240595808. The cubic root of 1656728027 is about 1183.2696893541.

The spelling of 1656728027 in words is "one billion, six hundred fifty-six million, seven hundred twenty-eight thousand, twenty-seven".