1609220044 has 24 divisors (see below), whose sum is σ = 2956262400. Its totient is φ = 765453840.

The previous prime is 1609220033. The next prime is 1609220057. The reversal of 1609220044 is 4400229061.

It is a super-2 number, since 2×1609220044² = 5179178300022723872, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1609219994 and 1609220021.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 102664 + ... + 117295.

It is an arithmetic number, because the mean of its divisors is an integer number (123177600).

Almost surely, 2^1609220044 is an apocalyptic number.

It is an amenable number.

1609220044 is a deficient number, since it is larger than the sum of its proper divisors (1347042356).

1609220044 is a wasteful number, since it uses less digits than its factorization.

1609220044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220053 (or 220051 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 1609220044 is about 40115.0849930547. The cubic root of 1609220044 is about 1171.8494246403.

The spelling of 1609220044 in words is "one billion, six hundred nine million, two hundred twenty thousand, forty-four".