613255109 has 2 divisors, whose sum is σ = 613255110. Its totient is φ = 613255108.

The previous prime is 613255079. The next prime is 613255183. The reversal of 613255109 is 901552316.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 611572900 + 1682209 = 24730^2 + 1297^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-613255109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (613257109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306627554 + 306627555.

It is an arithmetic number, because the mean of its divisors is an integer number (306627555).

Almost surely, 2^613255109 is an apocalyptic number.

It is an amenable number.

613255109 is a deficient number, since it is larger than the sum of its proper divisors (1).

613255109 is an equidigital number, since it uses as much as digits as its factorization.

613255109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8100, while the sum is 32.

The square root of 613255109 is about 24763.9881481154. The cubic root of 613255109 is about 849.5984765633.

The spelling of 613255109 in words is "six hundred thirteen million, two hundred fifty-five thousand, one hundred nine".