613538009 has 4 divisors (see below), whose sum is σ = 701186304. Its totient is φ = 525889716.

The previous prime is 613537999. The next prime is 613538011. The reversal of 613538009 is 900835316.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 613538009 - 2²⁰ = 612489433 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 613538009.

It is not an unprimeable number, because it can be changed into a prime (613538039) 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, 43824137 + ... + 43824150.

It is an arithmetic number, because the mean of its divisors is an integer number (175296576).

Almost surely, 2^613538009 is an apocalyptic number.

It is an amenable number.

613538009 is a deficient number, since it is larger than the sum of its proper divisors (87648295).

613538009 is an equidigital number, since it uses as much as digits as its factorization.

613538009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87648294.

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 613538009 is about 24769.6994127906. The cubic root of 613538009 is about 849.7290989075.

It can be divided in two parts, 6135 and 38009, that added together give a palindrome (44144).

The spelling of 613538009 in words is "six hundred thirteen million, five hundred thirty-eight thousand, nine".