613809013 has 4 divisors (see below), whose sum is σ = 614983168. Its totient is φ = 612634860.

The previous prime is 613808989. The next prime is 613809067. The reversal of 613809013 is 310908316.

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 613809013 - 2¹³ = 613800821 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (613806013) 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, 586293 + ... + 587338.

It is an arithmetic number, because the mean of its divisors is an integer number (153745792).

Almost surely, 2^613809013 is an apocalyptic number.

It is an amenable number.

613809013 is a deficient number, since it is larger than the sum of its proper divisors (1174155).

613809013 is a wasteful number, since it uses less digits than its factorization.

613809013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1174154.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 613809013 is about 24775.1692829736. The cubic root of 613809013 is about 849.8541909063.

The spelling of 613809013 in words is "six hundred thirteen million, eight hundred nine thousand, thirteen".