1588721161 has 2 divisors, whose sum is σ = 1588721162. Its totient is φ = 1588721160.

The previous prime is 1588721153. The next prime is 1588721231. The reversal of 1588721161 is 1611278851.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1585552761 + 3168400 = 39819^2 + 1780^2 .

It is a cyclic number.

It is not a de Polignac number, because 1588721161 - 2³ = 1588721153 is a prime.

It is not a weakly prime, because it can be changed into another prime (1588721861) 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, 794360580 + 794360581.

It is an arithmetic number, because the mean of its divisors is an integer number (794360581).

Almost surely, 2^1588721161 is an apocalyptic number.

It is an amenable number.

1588721161 is a deficient number, since it is larger than the sum of its proper divisors (1).

1588721161 is an equidigital number, since it uses as much as digits as its factorization.

1588721161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 26880, while the sum is 40.

The square root of 1588721161 is about 39858.7651715404. The cubic root of 1588721161 is about 1166.8523182743.

The spelling of 1588721161 in words is "one billion, five hundred eighty-eight million, seven hundred twenty-one thousand, one hundred sixty-one".