1608849889919 has 16 divisors (see below), whose sum is σ = 1666742944320. Its totient is φ = 1551119539200.

The previous prime is 1608849889873. The next prime is 1608849889949. The reversal of 1608849889919 is 9199889488061.

It is a cyclic number.

It is not a de Polignac number, because 1608849889919 - 2¹² = 1608849885823 is a prime.

It is a super-2 number, since 2×1608849889919² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1608849889949) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59681894 + ... + 59708844.

It is an arithmetic number, because the mean of its divisors is an integer number (104171434020).

Almost surely, 2^{1608849889919} is an apocalyptic number.

1608849889919 is a deficient number, since it is larger than the sum of its proper divisors (57893054401).

1608849889919 is a wasteful number, since it uses less digits than its factorization.

1608849889919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29890.

The product of its (nonzero) digits is 644972544, while the sum is 80.

The spelling of 1608849889919 in words is "one trillion, six hundred eight billion, eight hundred forty-nine million, eight hundred eighty-nine thousand, nine hundred nineteen".