116451809 has 2 divisors, whose sum is σ = 116451810. Its totient is φ = 116451808.

The previous prime is 116451799. The next prime is 116451821. The reversal of 116451809 is 908154611.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 65286400 + 51165409 = 8080^2 + 7153^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-116451809 is a prime.

It is a super-2 number, since 2×116451809² = 27122047638744962, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (116451859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58225904 + 58225905.

It is an arithmetic number, because the mean of its divisors is an integer number (58225905).

Almost surely, 2^116451809 is an apocalyptic number.

It is an amenable number.

116451809 is a deficient number, since it is larger than the sum of its proper divisors (1).

116451809 is an equidigital number, since it uses as much as digits as its factorization.

116451809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 35.

The square root of 116451809 is about 10791.2839365851. The cubic root of 116451809 is about 488.3322574367.

The spelling of 116451809 in words is "one hundred sixteen million, four hundred fifty-one thousand, eight hundred nine".