1606644609319 has 2 divisors, whose sum is σ = 1606644609320. Its totient is φ = 1606644609318.

The previous prime is 1606644609287. The next prime is 1606644609329. The reversal of 1606644609319 is 9139064466061.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1606644609319 - 2⁵ = 1606644609287 is a prime.

It is a super-2 number, since 2×1606644609319² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1606644609319.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1606644609329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 803322304659 + 803322304660.

It is an arithmetic number, because the mean of its divisors is an integer number (803322304660).

Almost surely, 2^{1606644609319} is an apocalyptic number.

1606644609319 is a deficient number, since it is larger than the sum of its proper divisors (1).

1606644609319 is an equidigital number, since it uses as much as digits as its factorization.

1606644609319 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5038848, while the sum is 55.

The spelling of 1606644609319 in words is "one trillion, six hundred six billion, six hundred forty-four million, six hundred nine thousand, three hundred nineteen".