1609889226 has 16 divisors (see below), whose sum is σ = 3512485728. Its totient is φ = 487845200.

The previous prime is 1609889201. The next prime is 1609889233. The reversal of 1609889226 is 6229889061.

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, 12196065 + ... + 12196196.

It is an arithmetic number, because the mean of its divisors is an integer number (219530358).

Almost surely, 2^1609889226 is an apocalyptic number.

1609889226 is an abundant number, since it is smaller than the sum of its proper divisors (1902596502).

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

1609889226 is a wasteful number, since it uses less digits than its factorization.

1609889226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24392277.

The product of its (nonzero) digits is 746496, while the sum is 51.

The square root of 1609889226 is about 40123.4249036644. The cubic root of 1609889226 is about 1172.0118370403.

It can be divided in two parts, 1609889 and 226, that added together give a triangular number (1610115 = T₁₇₉₄).

The spelling of 1609889226 in words is "one billion, six hundred nine million, eight hundred eighty-nine thousand, two hundred twenty-six".