1590382121 has 2 divisors, whose sum is σ = 1590382122. Its totient is φ = 1590382120.

The previous prime is 1590382117. The next prime is 1590382177. The reversal of 1590382121 is 1212830951.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1523731225 + 66650896 = 39035^2 + 8164^2 .

It is a cyclic number.

It is not a de Polignac number, because 1590382121 - 2² = 1590382117 is a prime.

It is not a weakly prime, because it can be changed into another prime (1590382621) 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, 795191060 + 795191061.

It is an arithmetic number, because the mean of its divisors is an integer number (795191061).

Almost surely, 2^1590382121 is an apocalyptic number.

It is an amenable number.

1590382121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1590382121 is an equidigital number, since it uses as much as digits as its factorization.

1590382121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 32.

The square root of 1590382121 is about 39879.5952963417. The cubic root of 1590382121 is about 1167.2588129359.

The spelling of 1590382121 in words is "one billion, five hundred ninety million, three hundred eighty-two thousand, one hundred twenty-one".