1641797327 has 2 divisors, whose sum is σ = 1641797328. Its totient is φ = 1641797326.

The previous prime is 1641797309. The next prime is 1641797347. The reversal of 1641797327 is 7237971461.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1641797327 - 2¹⁸ = 1641535183 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1641797347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 820898663 + 820898664.

It is an arithmetic number, because the mean of its divisors is an integer number (820898664).

Almost surely, 2^1641797327 is an apocalyptic number.

1641797327 is a deficient number, since it is larger than the sum of its proper divisors (1).

1641797327 is an equidigital number, since it uses as much as digits as its factorization.

1641797327 is an evil number, because the sum of its binary digits is even.

The product of its digits is 444528, while the sum is 47.

The square root of 1641797327 is about 40519.0982994439. The cubic root of 1641797327 is about 1179.7043516235.

The spelling of 1641797327 in words is "one billion, six hundred forty-one million, seven hundred ninety-seven thousand, three hundred twenty-seven".