109591613 has 2 divisors, whose sum is σ = 109591614. Its totient is φ = 109591612.

The previous prime is 109591607. The next prime is 109591627. The reversal of 109591613 is 316195901.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70190884 + 39400729 = 8378^2 + 6277^2 .

It is a cyclic number.

It is not a de Polignac number, because 109591613 - 2⁶ = 109591549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (109591633) 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, 54795806 + 54795807.

It is an arithmetic number, because the mean of its divisors is an integer number (54795807).

Almost surely, 2^109591613 is an apocalyptic number.

It is an amenable number.

109591613 is a deficient number, since it is larger than the sum of its proper divisors (1).

109591613 is an equidigital number, since it uses as much as digits as its factorization.

109591613 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7290, while the sum is 35.

The square root of 109591613 is about 10468.6012914811. The cubic root of 109591613 is about 478.5482947542.

The spelling of 109591613 in words is "one hundred nine million, five hundred ninety-one thousand, six hundred thirteen".