1613885545 has 8 divisors (see below), whose sum is σ = 1938441096. Its totient is φ = 1289922816.

The previous prime is 1613885519. The next prime is 1613885569. The reversal of 1613885545 is 5455883161.

It can be written as a sum of positive squares in 4 ways, for example, as 643687641 + 970197904 = 25371^2 + 31148^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1613885545 - 2¹¹ = 1613883497 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1613885495 and 1613885504.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 142192 + ... + 153121.

It is an arithmetic number, because the mean of its divisors is an integer number (242305137).

Almost surely, 2^1613885545 is an apocalyptic number.

It is an amenable number.

1613885545 is a deficient number, since it is larger than the sum of its proper divisors (324555551).

1613885545 is a wasteful number, since it uses less digits than its factorization.

1613885545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296411.

The product of its digits is 576000, while the sum is 46.

The square root of 1613885545 is about 40173.1943589255. The cubic root of 1613885545 is about 1172.9808194331.

The spelling of 1613885545 in words is "one billion, six hundred thirteen million, eight hundred eighty-five thousand, five hundred forty-five".