1671775487 has 2 divisors, whose sum is σ = 1671775488. Its totient is φ = 1671775486.

The previous prime is 1671775463. The next prime is 1671775489. The reversal of 1671775487 is 7845771761.

It is a strong prime.

It is an emirp because it is prime and its reverse (7845771761) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1671775487 - 2¹⁸ = 1671513343 is a prime.

Together with 1671775489, 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 (1671775489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 835887743 + 835887744.

It is an arithmetic number, because the mean of its divisors is an integer number (835887744).

Almost surely, 2^1671775487 is an apocalyptic number.

1671775487 is a deficient number, since it is larger than the sum of its proper divisors (1).

1671775487 is an equidigital number, since it uses as much as digits as its factorization.

1671775487 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2304960, while the sum is 53.

The square root of 1671775487 is about 40887.3511859108. The cubic root of 1671775487 is about 1186.8413010551.

The spelling of 1671775487 in words is "one billion, six hundred seventy-one million, seven hundred seventy-five thousand, four hundred eighty-seven".