1609149359 has 2 divisors, whose sum is σ = 1609149360. Its totient is φ = 1609149358.

The previous prime is 1609149343. The next prime is 1609149371. The reversal of 1609149359 is 9539419061.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1609149359 - 2⁴ = 1609149343 is a prime.

It is a super-2 number, since 2×1609149359² = 5178723319140221762, which contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1609149379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 804574679 + 804574680.

It is an arithmetic number, because the mean of its divisors is an integer number (804574680).

Almost surely, 2^1609149359 is an apocalyptic number.

1609149359 is a deficient number, since it is larger than the sum of its proper divisors (1).

1609149359 is an equidigital number, since it uses as much as digits as its factorization.

1609149359 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 262440, while the sum is 47.

The square root of 1609149359 is about 40114.2039557063. The cubic root of 1609149359 is about 1171.8322665581.

The spelling of 1609149359 in words is "one billion, six hundred nine million, one hundred forty-nine thousand, three hundred fifty-nine".