1613506688 has 32 divisors (see below), whose sum is σ = 3228879360. Its totient is φ = 803121408.

The previous prime is 1613506681. The next prime is 1613506691. The reversal of 1613506688 is 8866053161.

It is a tau number, because it is divible by the number of its divisors (32).

It is not an unprimeable number, because it can be changed into a prime (1613506681) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 281 + ... + 56807.

It is an arithmetic number, because the mean of its divisors is an integer number (100902480).

Almost surely, 2^1613506688 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1613506688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1614439680).

1613506688 is an abundant number, since it is smaller than the sum of its proper divisors (1615372672).

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

1613506688 is an equidigital number, since it uses as much as digits as its factorization.

1613506688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56764 (or 56752 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 44.

The square root of 1613506688 is about 40168.4787862324. The cubic root of 1613506688 is about 1172.8890271385.

The spelling of 1613506688 in words is "one billion, six hundred thirteen million, five hundred six thousand, six hundred eighty-eight".