18796109 has 2 divisors, whose sum is σ = 18796110. Its totient is φ = 18796108.

The previous prime is 18796103. The next prime is 18796121. The reversal of 18796109 is 90169781.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14478025 + 4318084 = 3805^2 + 2078^2 .

It is a cyclic number.

It is not a de Polignac number, because 18796109 - 2¹⁶ = 18730573 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18796103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9398054 + 9398055.

It is an arithmetic number, because the mean of its divisors is an integer number (9398055).

Almost surely, 2^18796109 is an apocalyptic number.

It is an amenable number.

18796109 is a deficient number, since it is larger than the sum of its proper divisors (1).

18796109 is an equidigital number, since it uses as much as digits as its factorization.

18796109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27216, while the sum is 41.

The square root of 18796109 is about 4335.4479584006. The cubic root of 18796109 is about 265.8822334700.

The spelling of 18796109 in words is "eighteen million, seven hundred ninety-six thousand, one hundred nine".