1609376089 has 2 divisors, whose sum is σ = 1609376090. Its totient is φ = 1609376088.

The previous prime is 1609376081. The next prime is 1609376143. The reversal of 1609376089 is 9806739061.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1236577225 + 372798864 = 35165^2 + 19308^2 .

It is a cyclic number.

It is not a de Polignac number, because 1609376089 - 2³ = 1609376081 is a prime.

It is not a weakly prime, because it can be changed into another prime (1609376081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 804688044 + 804688045.

It is an arithmetic number, because the mean of its divisors is an integer number (804688045).

Almost surely, 2^1609376089 is an apocalyptic number.

It is an amenable number.

1609376089 is a deficient number, since it is larger than the sum of its proper divisors (1).

1609376089 is an equidigital number, since it uses as much as digits as its factorization.

1609376089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 489888, while the sum is 49.

The square root of 1609376089 is about 40117.0299124948. The cubic root of 1609376089 is about 1171.8873012364.

The spelling of 1609376089 in words is "one billion, six hundred nine million, three hundred seventy-six thousand, eighty-nine".