1608705315193 has 2 divisors, whose sum is σ = 1608705315194. Its totient is φ = 1608705315192.

The previous prime is 1608705315179. The next prime is 1608705315223. The reversal of 1608705315193 is 3915135078061.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 837422651664 + 771282663529 = 915108^2 + 878227^2 .

It is an emirp because it is prime and its reverse (3915135078061) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1608705315193 - 2²¹ = 1608703218041 is a prime.

It is a super-2 number, since 2×1608705315193² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1608705315163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 804352657596 + 804352657597.

It is an arithmetic number, because the mean of its divisors is an integer number (804352657597).

Almost surely, 2^{1608705315193} is an apocalyptic number.

It is an amenable number.

1608705315193 is a deficient number, since it is larger than the sum of its proper divisors (1).

1608705315193 is an equidigital number, since it uses as much as digits as its factorization.

1608705315193 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 680400, while the sum is 49.

The spelling of 1608705315193 in words is "one trillion, six hundred eight billion, seven hundred five million, three hundred fifteen thousand, one hundred ninety-three".