613949093 has 2 divisors, whose sum is σ = 613949094. Its totient is φ = 613949092.

The previous prime is 613949069. The next prime is 613949123. The reversal of 613949093 is 390949316.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 420127009 + 193822084 = 20497^2 + 13922^2 .

It is a cyclic number.

It is not a de Polignac number, because 613949093 - 2¹⁸ = 613686949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (613949393) 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 as a sum of consecutive naturals, namely, 306974546 + 306974547.

It is an arithmetic number, because the mean of its divisors is an integer number (306974547).

Almost surely, 2^613949093 is an apocalyptic number.

It is an amenable number.

613949093 is a deficient number, since it is larger than the sum of its proper divisors (1).

613949093 is an equidigital number, since it uses as much as digits as its factorization.

613949093 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 157464, while the sum is 44.

The square root of 613949093 is about 24777.9961457742. The cubic root of 613949093 is about 849.9188356180.

The spelling of 613949093 in words is "six hundred thirteen million, nine hundred forty-nine thousand, ninety-three".