611109193 has 2 divisors, whose sum is σ = 611109194. Its totient is φ = 611109192.

The previous prime is 611109151. The next prime is 611109203. The reversal of 611109193 is 391901116.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 541353289 + 69755904 = 23267^2 + 8352^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-611109193 is a prime.

It is a super-2 number, since 2×611109193² = 746908891538222498, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (611109143) 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, 305554596 + 305554597.

It is an arithmetic number, because the mean of its divisors is an integer number (305554597).

Almost surely, 2^611109193 is an apocalyptic number.

It is an amenable number.

611109193 is a deficient number, since it is larger than the sum of its proper divisors (1).

611109193 is an equidigital number, since it uses as much as digits as its factorization.

611109193 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1458, while the sum is 31.

The square root of 611109193 is about 24720.6228279143. The cubic root of 611109193 is about 848.6063404268.

The spelling of 611109193 in words is "six hundred eleven million, one hundred nine thousand, one hundred ninety-three".