3609009578 has 4 divisors (see below), whose sum is σ = 5413514370. Its totient is φ = 1804504788.

The previous prime is 3609009533. The next prime is 3609009581. The reversal of 3609009578 is 8759009063.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2741883769 + 867125809 = 52363^2 + 29447^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 902252393 + ... + 902252396.

Almost surely, 2^3609009578 is an apocalyptic number.

3609009578 is a deficient number, since it is larger than the sum of its proper divisors (1804504792).

3609009578 is a wasteful number, since it uses less digits than its factorization.

3609009578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1804504791.

The product of its (nonzero) digits is 408240, while the sum is 47.

The square root of 3609009578 is about 60075.0329005320. The cubic root of 3609009578 is about 1533.8963412756.

The spelling of 3609009578 in words is "three billion, six hundred nine million, nine thousand, five hundred seventy-eight".