1609377089 has 2 divisors, whose sum is σ = 1609377090. Its totient is φ = 1609377088.

The previous prime is 1609377041. The next prime is 1609377101. The reversal of 1609377089 is 9807739061.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1218010000 + 391367089 = 34900^2 + 19783^2 .

It is a cyclic number.

It is not a de Polignac number, because 1609377089 - 2⁸ = 1609376833 is a prime.

It is a super-2 number, since 2×1609377089² = 5180189229196227842, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1609377389) 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, 804688544 + 804688545.

It is an arithmetic number, because the mean of its divisors is an integer number (804688545).

Almost surely, 2^1609377089 is an apocalyptic number.

It is an amenable number.

1609377089 is a deficient number, since it is larger than the sum of its proper divisors (1).

1609377089 is an equidigital number, since it uses as much as digits as its factorization.

1609377089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 571536, while the sum is 50.

The square root of 1609377089 is about 40117.0423760277. The cubic root of 1609377089 is about 1171.8875439572.

The spelling of 1609377089 in words is "one billion, six hundred nine million, three hundred seventy-seven thousand, eighty-nine".