1640162827 has 2 divisors, whose sum is σ = 1640162828. Its totient is φ = 1640162826.

The previous prime is 1640162819. The next prime is 1640162863. The reversal of 1640162827 is 7282610461.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1640162827 - 2³ = 1640162819 is a prime.

It is not a weakly prime, because it can be changed into another prime (1640162527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 820081413 + 820081414.

It is an arithmetic number, because the mean of its divisors is an integer number (820081414).

Almost surely, 2^1640162827 is an apocalyptic number.

1640162827 is a deficient number, since it is larger than the sum of its proper divisors (1).

1640162827 is an equidigital number, since it uses as much as digits as its factorization.

1640162827 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 1640162827 is about 40498.9237758240. The cubic root of 1640162827 is about 1179.3127346700.

The spelling of 1640162827 in words is "one billion, six hundred forty million, one hundred sixty-two thousand, eight hundred twenty-seven".