1670258311609 has 2 divisors, whose sum is σ = 1670258311610. Its totient is φ = 1670258311608.

The previous prime is 1670258311571. The next prime is 1670258311621. The reversal of 1670258311609 is 9061138520761.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1258049370384 + 412208941225 = 1121628^2 + 642035^2 .

It is a cyclic number.

It is not a de Polignac number, because 1670258311609 - 2¹¹ = 1670258309561 is a prime.

It is not a weakly prime, because it can be changed into another prime (1670258311649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 835129155804 + 835129155805.

It is an arithmetic number, because the mean of its divisors is an integer number (835129155805).

Almost surely, 2^{1670258311609} is an apocalyptic number.

It is an amenable number.

1670258311609 is a deficient number, since it is larger than the sum of its proper divisors (1).

1670258311609 is an equidigital number, since it uses as much as digits as its factorization.

1670258311609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 544320, while the sum is 49.

The spelling of 1670258311609 in words is "one trillion, six hundred seventy billion, two hundred fifty-eight million, three hundred eleven thousand, six hundred nine".