1659196823 has 2 divisors, whose sum is σ = 1659196824. Its totient is φ = 1659196822.

The previous prime is 1659196817. The next prime is 1659196841. The reversal of 1659196823 is 3286919561.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1659196823 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1659196813) 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, 829598411 + 829598412.

It is an arithmetic number, because the mean of its divisors is an integer number (829598412).

Almost surely, 2^1659196823 is an apocalyptic number.

1659196823 is a deficient number, since it is larger than the sum of its proper divisors (1).

1659196823 is an equidigital number, since it uses as much as digits as its factorization.

1659196823 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 699840, while the sum is 50.

The square root of 1659196823 is about 40733.2397803072. The cubic root of 1659196823 is about 1183.8571528324.

The spelling of 1659196823 in words is "one billion, six hundred fifty-nine million, one hundred ninety-six thousand, eight hundred twenty-three".