1799623823 has 2 divisors, whose sum is σ = 1799623824. Its totient is φ = 1799623822.

The previous prime is 1799623807. The next prime is 1799623867. The reversal of 1799623823 is 3283269971.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1799623823 - 2⁴ = 1799623807 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1799623123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 899811911 + 899811912.

It is an arithmetic number, because the mean of its divisors is an integer number (899811912).

Almost surely, 2^1799623823 is an apocalyptic number.

1799623823 is a deficient number, since it is larger than the sum of its proper divisors (1).

1799623823 is an equidigital number, since it uses as much as digits as its factorization.

1799623823 is an evil number, because the sum of its binary digits is even.

The product of its digits is 979776, while the sum is 50.

The square root of 1799623823 is about 42421.9733510830. The cubic root of 1799623823 is about 1216.3556530441.

The spelling of 1799623823 in words is "one billion, seven hundred ninety-nine million, six hundred twenty-three thousand, eight hundred twenty-three".