1840234223 has 2 divisors, whose sum is σ = 1840234224. Its totient is φ = 1840234222.

The previous prime is 1840234213. The next prime is 1840234339. The reversal of 1840234223 is 3224320481.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1840234223 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1840234213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 920117111 + 920117112.

It is an arithmetic number, because the mean of its divisors is an integer number (920117112).

Almost surely, 2^1840234223 is an apocalyptic number.

1840234223 is a deficient number, since it is larger than the sum of its proper divisors (1).

1840234223 is an equidigital number, since it uses as much as digits as its factorization.

1840234223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9216, while the sum is 29.

The square root of 1840234223 is about 42897.9512680967. The cubic root of 1840234223 is about 1225.4371280176.

It can be divided in two parts, 18402 and 34223, that added together give a palindrome (52625).

The spelling of 1840234223 in words is "one billion, eight hundred forty million, two hundred thirty-four thousand, two hundred twenty-three".