613428913 has 4 divisors (see below), whose sum is σ = 626480640. Its totient is φ = 600377188.

The previous prime is 613428911. The next prime is 613428953. The reversal of 613428913 is 319824316.

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 613428913 - 2¹ = 613428911 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (613428911) 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, 6525793 + ... + 6525886.

It is an arithmetic number, because the mean of its divisors is an integer number (156620160).

Almost surely, 2^613428913 is an apocalyptic number.

It is an amenable number.

613428913 is a deficient number, since it is larger than the sum of its proper divisors (13051727).

613428913 is a wasteful number, since it uses less digits than its factorization.

613428913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13051726.

The product of its digits is 31104, while the sum is 37.

The square root of 613428913 is about 24767.4971081052. The cubic root of 613428913 is about 849.6787311826.

The spelling of 613428913 in words is "six hundred thirteen million, four hundred twenty-eight thousand, nine hundred thirteen".