1640160671 has 2 divisors, whose sum is σ = 1640160672. Its totient is φ = 1640160670.

The previous prime is 1640160649. The next prime is 1640160707. The reversal of 1640160671 is 1760610461.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1640160671 - 2¹⁸ = 1639898527 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1640160601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 820080335 + 820080336.

It is an arithmetic number, because the mean of its divisors is an integer number (820080336).

Almost surely, 2^1640160671 is an apocalyptic number.

1640160671 is a deficient number, since it is larger than the sum of its proper divisors (1).

1640160671 is an equidigital number, since it uses as much as digits as its factorization.

1640160671 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 1640160671 is about 40498.8971578239. The cubic root of 1640160671 is about 1179.3122179328.

The spelling of 1640160671 in words is "one billion, six hundred forty million, one hundred sixty thousand, six hundred seventy-one".