109146509 has 2 divisors, whose sum is σ = 109146510. Its totient is φ = 109146508.

The previous prime is 109146497. The next prime is 109146529. The reversal of 109146509 is 905641901.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 93122500 + 16024009 = 9650^2 + 4003^2 .

It is a cyclic number.

It is not a de Polignac number, because 109146509 - 2⁴ = 109146493 is a prime.

It is a Chen prime.

It is equal to p_6257087 and since 109146509 and 6257087 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (109146529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54573254 + 54573255.

It is an arithmetic number, because the mean of its divisors is an integer number (54573255).

Almost surely, 2^109146509 is an apocalyptic number.

It is an amenable number.

109146509 is a deficient number, since it is larger than the sum of its proper divisors (1).

109146509 is an equidigital number, since it uses as much as digits as its factorization.

109146509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9720, while the sum is 35.

The square root of 109146509 is about 10447.3206612988. The cubic root of 109146509 is about 477.8995444321.

The spelling of 109146509 in words is "one hundred nine million, one hundred forty-six thousand, five hundred nine".