1686144023 has 2 divisors, whose sum is σ = 1686144024. Its totient is φ = 1686144022.

The previous prime is 1686144017. The next prime is 1686144059. The reversal of 1686144023 is 3204416861.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1686144023 - 2¹² = 1686139927 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 (1686144073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 843072011 + 843072012.

It is an arithmetic number, because the mean of its divisors is an integer number (843072012).

Almost surely, 2^1686144023 is an apocalyptic number.

1686144023 is a deficient number, since it is larger than the sum of its proper divisors (1).

1686144023 is an equidigital number, since it uses as much as digits as its factorization.

1686144023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27648, while the sum is 35.

The square root of 1686144023 is about 41062.6840696027. The cubic root of 1686144023 is about 1190.2318177007.

The spelling of 1686144023 in words is "one billion, six hundred eighty-six million, one hundred forty-four thousand, twenty-three".