1652721823 has 2 divisors, whose sum is σ = 1652721824. Its totient is φ = 1652721822.

The previous prime is 1652721797. The next prime is 1652721839. The reversal of 1652721823 is 3281272561.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1652721823 - 2⁹ = 1652721311 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1652721523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 826360911 + 826360912.

It is an arithmetic number, because the mean of its divisors is an integer number (826360912).

Almost surely, 2^1652721823 is an apocalyptic number.

1652721823 is a deficient number, since it is larger than the sum of its proper divisors (1).

1652721823 is an equidigital number, since it uses as much as digits as its factorization.

1652721823 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40320, while the sum is 37.

The square root of 1652721823 is about 40653.6815430042. The cubic root of 1652721823 is about 1182.3151480675.

The spelling of 1652721823 in words is "one billion, six hundred fifty-two million, seven hundred twenty-one thousand, eight hundred twenty-three".