1609558608 has 80 divisors (see below), whose sum is σ = 4880501120. Its totient is φ = 447441408.

The previous prime is 1609558603. The next prime is 1609558631. The reversal of 1609558608 is 8068559061.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1609558603) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52303 + ... + 77166.

It is an arithmetic number, because the mean of its divisors is an integer number (61006264).

Almost surely, 2^1609558608 is an apocalyptic number.

It is an amenable number.

1609558608 is an abundant number, since it is smaller than the sum of its proper divisors (3270942512).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1609558608 is a wasteful number, since it uses less digits than its factorization.

1609558608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129524 (or 129518 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 48.

The square root of 1609558608 is about 40119.3046799169. The cubic root of 1609558608 is about 1171.9316007250.

The spelling of 1609558608 in words is "one billion, six hundred nine million, five hundred fifty-eight thousand, six hundred eight".