1671258427 has 2 divisors, whose sum is σ = 1671258428. Its totient is φ = 1671258426.

The previous prime is 1671258403. The next prime is 1671258431. The reversal of 1671258427 is 7248521761.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1671258427 - 2¹⁹ = 1670734139 is a prime.

It is not a weakly prime, because it can be changed into another prime (1671258467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 835629213 + 835629214.

It is an arithmetic number, because the mean of its divisors is an integer number (835629214).

Almost surely, 2^1671258427 is an apocalyptic number.

1671258427 is a deficient number, since it is larger than the sum of its proper divisors (1).

1671258427 is an equidigital number, since it uses as much as digits as its factorization.

1671258427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 188160, while the sum is 43.

The square root of 1671258427 is about 40881.0277145768. The cubic root of 1671258427 is about 1186.7189298704.

The spelling of 1671258427 in words is "one billion, six hundred seventy-one million, two hundred fifty-eight thousand, four hundred twenty-seven".