1708129427 has 2 divisors, whose sum is σ = 1708129428. Its totient is φ = 1708129426.

The previous prime is 1708129403. The next prime is 1708129429. The reversal of 1708129427 is 7249218071.

It is a strong prime.

It is an emirp because it is prime and its reverse (7249218071) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1708129427 - 2⁶ = 1708129363 is a prime.

It is a super-2 number, since 2×1708129427² = 5835412278766696658, which contains 22 as substring.

Together with 1708129429, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1708129429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 854064713 + 854064714.

It is an arithmetic number, because the mean of its divisors is an integer number (854064714).

Almost surely, 2^1708129427 is an apocalyptic number.

1708129427 is a deficient number, since it is larger than the sum of its proper divisors (1).

1708129427 is an equidigital number, since it uses as much as digits as its factorization.

1708129427 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56448, while the sum is 41.

The square root of 1708129427 is about 41329.5224627626. The cubic root of 1708129427 is about 1195.3825860192.

The spelling of 1708129427 in words is "one billion, seven hundred eight million, one hundred twenty-nine thousand, four hundred twenty-seven".