1613713578 has 16 divisors (see below), whose sum is σ = 3288322656. Its totient is φ = 527755280.

The previous prime is 1613713561. The next prime is 1613713601. The reversal of 1613713578 is 8753173161.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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, 2536968 + ... + 2537603.

It is an arithmetic number, because the mean of its divisors is an integer number (205520166).

Almost surely, 2^1613713578 is an apocalyptic number.

1613713578 is an abundant number, since it is smaller than the sum of its proper divisors (1674609078).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1613713578 is a wasteful number, since it uses less digits than its factorization.

1613713578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5074629.

The product of its digits is 105840, while the sum is 42.

The square root of 1613713578 is about 40171.0539816918. The cubic root of 1613713578 is about 1172.9391557687.

The spelling of 1613713578 in words is "one billion, six hundred thirteen million, seven hundred thirteen thousand, five hundred seventy-eight".