3685551823 has 2 divisors, whose sum is σ = 3685551824. Its totient is φ = 3685551822.

The previous prime is 3685551791. The next prime is 3685551929. The reversal of 3685551823 is 3281555863.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3685551823 - 2⁵ = 3685551791 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3685551323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1842775911 + 1842775912.

It is an arithmetic number, because the mean of its divisors is an integer number (1842775912).

Almost surely, 2^3685551823 is an apocalyptic number.

3685551823 is a deficient number, since it is larger than the sum of its proper divisors (1).

3685551823 is an equidigital number, since it uses as much as digits as its factorization.

3685551823 is an evil number, because the sum of its binary digits is even.

The product of its digits is 864000, while the sum is 46.

The square root of 3685551823 is about 60708.7458526364. The cubic root of 3685551823 is about 1544.6645303136.

The spelling of 3685551823 in words is "three billion, six hundred eighty-five million, five hundred fifty-one thousand, eight hundred twenty-three".