1609896906 has 24 divisors (see below), whose sum is σ = 3693293604. Its totient is φ = 505065600.

The previous prime is 1609896887. The next prime is 1609896979. The reversal of 1609896906 is 6096989061.

It can be written as a sum of positive squares in 2 ways, for example, as 1568872881 + 41024025 = 39609^2 + 6405^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2630245 + ... + 2630856.

Almost surely, 2^1609896906 is an apocalyptic number.

1609896906 is an abundant number, since it is smaller than the sum of its proper divisors (2083396698).

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

1609896906 is a wasteful number, since it uses less digits than its factorization.

1609896906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5261126 (or 5261123 counting only the distinct ones).

The product of its (nonzero) digits is 1259712, while the sum is 54.

The square root of 1609896906 is about 40123.5206082417. The cubic root of 1609896906 is about 1172.0137007371.

The spelling of 1609896906 in words is "one billion, six hundred nine million, eight hundred ninety-six thousand, nine hundred six".