1613318668 has 12 divisors (see below), whose sum is σ = 3040485280. Its totient is φ = 744608592.

The previous prime is 1613318639. The next prime is 1613318669. The reversal of 1613318668 is 8668133161.

It is not an unprimeable number, because it can be changed into a prime (1613318669) 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, 15512628 + ... + 15512731.

Almost surely, 2^1613318668 is an apocalyptic number.

It is an amenable number.

1613318668 is a deficient number, since it is larger than the sum of its proper divisors (1427166612).

1613318668 is a wasteful number, since it uses less digits than its factorization.

1613318668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31025376 (or 31025374 counting only the distinct ones).

The product of its digits is 124416, while the sum is 43.

The square root of 1613318668 is about 40166.1383257091. The cubic root of 1613318668 is about 1172.8434669180.

The spelling of 1613318668 in words is "one billion, six hundred thirteen million, three hundred eighteen thousand, six hundred sixty-eight".