1709420137 has 2 divisors, whose sum is σ = 1709420138. Its totient is φ = 1709420136.

The previous prime is 1709420117. The next prime is 1709420143. The reversal of 1709420137 is 7310249071.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1517569936 + 191850201 = 38956^2 + 13851^2 .

It is a cyclic number.

It is not a de Polignac number, because 1709420137 - 2¹⁹ = 1708895849 is a prime.

It is not a weakly prime, because it can be changed into another prime (1709420117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 854710068 + 854710069.

It is an arithmetic number, because the mean of its divisors is an integer number (854710069).

Almost surely, 2^1709420137 is an apocalyptic number.

It is an amenable number.

1709420137 is a deficient number, since it is larger than the sum of its proper divisors (1).

1709420137 is an equidigital number, since it uses as much as digits as its factorization.

1709420137 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10584, while the sum is 34.

The square root of 1709420137 is about 41345.1343812062. The cubic root of 1709420137 is about 1195.6835982998.

The spelling of 1709420137 in words is "one billion, seven hundred nine million, four hundred twenty thousand, one hundred thirty-seven".