1640002127 has 2 divisors, whose sum is σ = 1640002128. Its totient is φ = 1640002126.

The previous prime is 1640002103. The next prime is 1640002129. The reversal of 1640002127 is 7212000461.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1640002127 - 2²⁶ = 1572893263 is a prime.

Together with 1640002129, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1640002129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 820001063 + 820001064.

It is an arithmetic number, because the mean of its divisors is an integer number (820001064).

Almost surely, 2^1640002127 is an apocalyptic number.

1640002127 is a deficient number, since it is larger than the sum of its proper divisors (1).

1640002127 is an equidigital number, since it uses as much as digits as its factorization.

1640002127 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 1640002127 is about 40496.9397238853. The cubic root of 1640002127 is about 1179.2742178140.

Adding to 1640002127 its reverse (7212000461), we get a palindrome (8852002588).

The spelling of 1640002127 in words is "one billion, six hundred forty million, two thousand, one hundred twenty-seven".