1840876109 has 2 divisors, whose sum is σ = 1840876110. Its totient is φ = 1840876108.

The previous prime is 1840876099. The next prime is 1840876111. The reversal of 1840876109 is 9016780481.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1042644100 + 798232009 = 32290^2 + 28253^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1840876109 is a prime.

Together with 1840876111, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1840876109.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1840876129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 920438054 + 920438055.

It is an arithmetic number, because the mean of its divisors is an integer number (920438055).

Almost surely, 2^1840876109 is an apocalyptic number.

It is an amenable number.

1840876109 is a deficient number, since it is larger than the sum of its proper divisors (1).

1840876109 is an equidigital number, since it uses as much as digits as its factorization.

1840876109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96768, while the sum is 44.

The square root of 1840876109 is about 42905.4321619070. The cubic root of 1840876109 is about 1225.5795916758.

The spelling of 1840876109 in words is "one billion, eight hundred forty million, eight hundred seventy-six thousand, one hundred nine".