613538913 has 8 divisors (see below), whose sum is σ = 880979008. Its totient is φ = 377562384.

The previous prime is 613538909. The next prime is 613538951. The reversal of 613538913 is 319835316.

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

It is not a de Polignac number, because 613538913 - 2² = 613538909 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 15731767 = 613538913 / (6 + 1 + 3 + 5 + 3 + 8 + 9 + 1 + 3).

It is not an unprimeable number, because it can be changed into a prime (613538983) by changing a digit.

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, 7865845 + ... + 7865922.

It is an arithmetic number, because the mean of its divisors is an integer number (110122376).

Almost surely, 2^613538913 is an apocalyptic number.

It is an amenable number.

613538913 is a deficient number, since it is larger than the sum of its proper divisors (267440095).

613538913 is a wasteful number, since it uses less digits than its factorization.

613538913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15731783.

The product of its digits is 58320, while the sum is 39.

The square root of 613538913 is about 24769.7176608858. The cubic root of 613538913 is about 849.7295162436.

The spelling of 613538913 in words is "six hundred thirteen million, five hundred thirty-eight thousand, nine hundred thirteen".